Home / 26,686.08-36,828-15,505.92

Finding the Fourth Proportional to 26,686.08, 36,828 and 15,505.92

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Solution

The fourth proportional to 26,686.08, 36,828 and 15,505.92 is: 21,398.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,686.08 : 36,828 = 15,505.92 : x
  2. Step 2: Convert to fraction form
    26,686.08/36,828 = 15,505.92/x
  3. Step 3: Cross multiply
    26,686.08x = 36,828 × 15,505.92
  4. Step 4: Simplify right side
    26,686.08x = 571,052,021.76
  5. Step 5: Solve for x
    x = 571,052,021.76/26,686.08
  6. Step 6: Final answer
    x = 21,398.87

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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.