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Finding the Fourth Proportional to 14,652.55, 20,220.56 and 7,938.16

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Solution

The fourth proportional to 14,652.55, 20,220.56 and 7,938.16 is: 10,954.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,652.55 : 20,220.56 = 7,938.16 : x
  2. Step 2: Convert to fraction form
    14,652.55/20,220.56 = 7,938.16/x
  3. Step 3: Cross multiply
    14,652.55x = 20,220.56 × 7,938.16
  4. Step 4: Simplify right side
    14,652.55x = 160,514,040.57
  5. Step 5: Solve for x
    x = 160,514,040.57/14,652.55
  6. Step 6: Final answer
    x = 10,954.68

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Half scale
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Double scale
Find fourth proportional to 14,653.55, 20,221.94 and 7,939.16
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.