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Finding the Fourth Proportional to 15,220.64, 22,830.96 and 9,379.28

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Solution

The fourth proportional to 15,220.64, 22,830.96 and 9,379.28 is: 14,068.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.64 : 22,830.96 = 9,379.28 : x
  2. Step 2: Convert to fraction form
    15,220.64/22,830.96 = 9,379.28/x
  3. Step 3: Cross multiply
    15,220.64x = 22,830.96 × 9,379.28
  4. Step 4: Simplify right side
    15,220.64x = 214,137,966.51
  5. Step 5: Solve for x
    x = 214,137,966.51/15,220.64
  6. Step 6: Final answer
    x = 14,068.92

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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.