Home / 20,259.57-27,959.10-11,307.12

Finding the Fourth Proportional to 20,259.57, 27,959.10 and 11,307.12

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Solution

The fourth proportional to 20,259.57, 27,959.10 and 11,307.12 is: 15,604.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.57 : 27,959.10 = 11,307.12 : x
  2. Step 2: Convert to fraction form
    20,259.57/27,959.10 = 11,307.12/x
  3. Step 3: Cross multiply
    20,259.57x = 27,959.10 × 11,307.12
  4. Step 4: Simplify right side
    20,259.57x = 316,136,898.79
  5. Step 5: Solve for x
    x = 316,136,898.79/20,259.57
  6. Step 6: Final answer
    x = 15,604.32

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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.