Home / 42,931.20-64,389.41-11,341.61

Finding the Fourth Proportional to 42,931.20, 64,389.41 and 11,341.61

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Solution

The fourth proportional to 42,931.20, 64,389.41 and 11,341.61 is: 17,010.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,931.20 : 64,389.41 = 11,341.61 : x
  2. Step 2: Convert to fraction form
    42,931.20/64,389.41 = 11,341.61/x
  3. Step 3: Cross multiply
    42,931.20x = 64,389.41 × 11,341.61
  4. Step 4: Simplify right side
    42,931.20x = 730,279,576.35
  5. Step 5: Solve for x
    x = 730,279,576.35/42,931.20
  6. Step 6: Final answer
    x = 17,010.46

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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.