Home / 31,387.77-47,081.74-7,695.43

Finding the Fourth Proportional to 31,387.77, 47,081.74 and 7,695.43

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Solution

The fourth proportional to 31,387.77, 47,081.74 and 7,695.43 is: 11,543.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,387.77 : 47,081.74 = 7,695.43 : x
  2. Step 2: Convert to fraction form
    31,387.77/47,081.74 = 7,695.43/x
  3. Step 3: Cross multiply
    31,387.77x = 47,081.74 × 7,695.43
  4. Step 4: Simplify right side
    31,387.77x = 362,313,979.80
  5. Step 5: Solve for x
    x = 362,313,979.80/31,387.77
  6. Step 6: Final answer
    x = 11,543.16

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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.