Home / 31,387.32-47,080.90-19,708.74

Finding the Fourth Proportional to 31,387.32, 47,080.90 and 19,708.74

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Solution

The fourth proportional to 31,387.32, 47,080.90 and 19,708.74 is: 29,563.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,387.32 : 47,080.90 = 19,708.74 : x
  2. Step 2: Convert to fraction form
    31,387.32/47,080.90 = 19,708.74/x
  3. Step 3: Cross multiply
    31,387.32x = 47,080.90 × 19,708.74
  4. Step 4: Simplify right side
    31,387.32x = 927,905,217.07
  5. Step 5: Solve for x
    x = 927,905,217.07/31,387.32
  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.