Home / 15,789.13-21,785.97-9,501.91

Finding the Fourth Proportional to 15,789.13, 21,785.97 and 9,501.91

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Solution

The fourth proportional to 15,789.13, 21,785.97 and 9,501.91 is: 13,110.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,789.13 : 21,785.97 = 9,501.91 : x
  2. Step 2: Convert to fraction form
    15,789.13/21,785.97 = 9,501.91/x
  3. Step 3: Cross multiply
    15,789.13x = 21,785.97 × 9,501.91
  4. Step 4: Simplify right side
    15,789.13x = 207,008,326.20
  5. Step 5: Solve for x
    x = 207,008,326.20/15,789.13
  6. Step 6: Final answer
    x = 13,110.81

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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.