Home / 31,387.29-47,080.93-19,708.71

Finding the Fourth Proportional to 31,387.29, 47,080.93 and 19,708.71

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Solution

The fourth proportional to 31,387.29, 47,080.93 and 19,708.71 is: 29,563.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,387.29 : 47,080.93 = 19,708.71 : x
  2. Step 2: Convert to fraction form
    31,387.29/47,080.93 = 19,708.71/x
  3. Step 3: Cross multiply
    31,387.29x = 47,080.93 × 19,708.71
  4. Step 4: Simplify right side
    31,387.29x = 927,904,395.90
  5. Step 5: Solve for x
    x = 927,904,395.90/31,387.29
  6. Step 6: Final answer
    x = 29,563.06

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1.5x scale

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.