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Finding the Fourth Proportional to 14,586.80, 21,880.20 and 9,057.20

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Solution

The fourth proportional to 14,586.80, 21,880.20 and 9,057.20 is: 13,585.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,586.80 : 21,880.20 = 9,057.20 : x
  2. Step 2: Convert to fraction form
    14,586.80/21,880.20 = 9,057.20/x
  3. Step 3: Cross multiply
    14,586.80x = 21,880.20 × 9,057.20
  4. Step 4: Simplify right side
    14,586.80x = 198,173,347.44
  5. Step 5: Solve for x
    x = 198,173,347.44/14,586.80
  6. Step 6: Final answer
    x = 13,585.80

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.