Home / 22,680.72-31,289.28-15,119.70

Finding the Fourth Proportional to 22,680.72, 31,289.28 and 15,119.70

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Solution

The fourth proportional to 22,680.72, 31,289.28 and 15,119.70 is: 20,858.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,680.72 : 31,289.28 = 15,119.70 : x
  2. Step 2: Convert to fraction form
    22,680.72/31,289.28 = 15,119.70/x
  3. Step 3: Cross multiply
    22,680.72x = 31,289.28 × 15,119.70
  4. Step 4: Simplify right side
    22,680.72x = 473,084,526.82
  5. Step 5: Solve for x
    x = 473,084,526.82/22,680.72
  6. Step 6: Final answer
    x = 20,858.44

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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.