Home / 13,411.40-18,507.90-7,443.66

Finding the Fourth Proportional to 13,411.40, 18,507.90 and 7,443.66

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Solution

The fourth proportional to 13,411.40, 18,507.90 and 7,443.66 is: 10,272.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,411.40 : 18,507.90 = 7,443.66 : x
  2. Step 2: Convert to fraction form
    13,411.40/18,507.90 = 7,443.66/x
  3. Step 3: Cross multiply
    13,411.40x = 18,507.90 × 7,443.66
  4. Step 4: Simplify right side
    13,411.40x = 137,766,514.91
  5. Step 5: Solve for x
    x = 137,766,514.91/13,411.40
  6. Step 6: Final answer
    x = 10,272.35

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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.