Home / 31,390.83-47,073.90-11,395.59

Finding the Fourth Proportional to 31,390.83, 47,073.90 and 11,395.59

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Solution

The fourth proportional to 31,390.83, 47,073.90 and 11,395.59 is: 17,088.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390.83 : 47,073.90 = 11,395.59 : x
  2. Step 2: Convert to fraction form
    31,390.83/47,073.90 = 11,395.59/x
  3. Step 3: Cross multiply
    31,390.83x = 47,073.90 × 11,395.59
  4. Step 4: Simplify right side
    31,390.83x = 536,434,864.10
  5. Step 5: Solve for x
    x = 536,434,864.10/31,390.83
  6. Step 6: Final answer
    x = 17,088.90

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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.