Home / 31,665.71-47,483.22-12,938.31

Finding the Fourth Proportional to 31,665.71, 47,483.22 and 12,938.31

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Solution

The fourth proportional to 31,665.71, 47,483.22 and 12,938.31 is: 19,401.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,665.71 : 47,483.22 = 12,938.31 : x
  2. Step 2: Convert to fraction form
    31,665.71/47,483.22 = 12,938.31/x
  3. Step 3: Cross multiply
    31,665.71x = 47,483.22 × 12,938.31
  4. Step 4: Simplify right side
    31,665.71x = 614,352,382.74
  5. Step 5: Solve for x
    x = 614,352,382.74/31,665.71
  6. Step 6: Final answer
    x = 19,401.19

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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.