Home / 13,438.71-18,545.15-7,470.23

Finding the Fourth Proportional to 13,438.71, 18,545.15 and 7,470.23

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Solution

The fourth proportional to 13,438.71, 18,545.15 and 7,470.23 is: 10,308.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.71 : 18,545.15 = 7,470.23 : x
  2. Step 2: Convert to fraction form
    13,438.71/18,545.15 = 7,470.23/x
  3. Step 3: Cross multiply
    13,438.71x = 18,545.15 × 7,470.23
  4. Step 4: Simplify right side
    13,438.71x = 138,536,461.83
  5. Step 5: Solve for x
    x = 138,536,461.83/13,438.71
  6. Step 6: Final answer
    x = 10,308.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.