Home / 15,018.38-20,726.15-8,645.93

Finding the Fourth Proportional to 15,018.38, 20,726.15 and 8,645.93

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Solution

The fourth proportional to 15,018.38, 20,726.15 and 8,645.93 is: 11,931.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,018.38 : 20,726.15 = 8,645.93 : x
  2. Step 2: Convert to fraction form
    15,018.38/20,726.15 = 8,645.93/x
  3. Step 3: Cross multiply
    15,018.38x = 20,726.15 × 8,645.93
  4. Step 4: Simplify right side
    15,018.38x = 179,196,695.21
  5. Step 5: Solve for x
    x = 179,196,695.21/15,018.38
  6. Step 6: Final answer
    x = 11,931.83

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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.