Home / 31,387.82-47,084.81-10,319.31

Finding the Fourth Proportional to 31,387.82, 47,084.81 and 10,319.31

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Solution

The fourth proportional to 31,387.82, 47,084.81 and 10,319.31 is: 15,479.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,387.82 : 47,084.81 = 10,319.31 : x
  2. Step 2: Convert to fraction form
    31,387.82/47,084.81 = 10,319.31/x
  3. Step 3: Cross multiply
    31,387.82x = 47,084.81 × 10,319.31
  4. Step 4: Simplify right side
    31,387.82x = 485,882,699.08
  5. Step 5: Solve for x
    x = 485,882,699.08/31,387.82
  6. Step 6: Final answer
    x = 15,479.98

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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.