Home / 15,319.04-21,142.56-9,354.18

Finding the Fourth Proportional to 15,319.04, 21,142.56 and 9,354.18

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Solution

The fourth proportional to 15,319.04, 21,142.56 and 9,354.18 is: 12,910.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,319.04 : 21,142.56 = 9,354.18 : x
  2. Step 2: Convert to fraction form
    15,319.04/21,142.56 = 9,354.18/x
  3. Step 3: Cross multiply
    15,319.04x = 21,142.56 × 9,354.18
  4. Step 4: Simplify right side
    15,319.04x = 197,771,311.90
  5. Step 5: Solve for x
    x = 197,771,311.90/15,319.04
  6. Step 6: Final answer
    x = 12,910.16

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Double scale
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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.