Home / 15,007.90-20,713.38-11,434.66

Finding the Fourth Proportional to 15,007.90, 20,713.38 and 11,434.66

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Solution

The fourth proportional to 15,007.90, 20,713.38 and 11,434.66 is: 15,781.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,007.90 : 20,713.38 = 11,434.66 : x
  2. Step 2: Convert to fraction form
    15,007.90/20,713.38 = 11,434.66/x
  3. Step 3: Cross multiply
    15,007.90x = 20,713.38 × 11,434.66
  4. Step 4: Simplify right side
    15,007.90x = 236,850,457.75
  5. Step 5: Solve for x
    x = 236,850,457.75/15,007.90
  6. Step 6: Final answer
    x = 15,781.72

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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.