Home / 14,505.76-20,017.56-8,220.16

Finding the Fourth Proportional to 14,505.76, 20,017.56 and 8,220.16

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Solution

The fourth proportional to 14,505.76, 20,017.56 and 8,220.16 is: 11,343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,505.76 : 20,017.56 = 8,220.16 : x
  2. Step 2: Convert to fraction form
    14,505.76/20,017.56 = 8,220.16/x
  3. Step 3: Cross multiply
    14,505.76x = 20,017.56 × 8,220.16
  4. Step 4: Simplify right side
    14,505.76x = 164,547,546.01
  5. Step 5: Solve for x
    x = 164,547,546.01/14,505.76
  6. Step 6: Final answer
    x = 11,343.60

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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.