Home / 20,686.86-31,008.42-9,601.02

Finding the Fourth Proportional to 20,686.86, 31,008.42 and 9,601.02

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Solution

The fourth proportional to 20,686.86, 31,008.42 and 9,601.02 is: 14,391.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.86 : 31,008.42 = 9,601.02 : x
  2. Step 2: Convert to fraction form
    20,686.86/31,008.42 = 9,601.02/x
  3. Step 3: Cross multiply
    20,686.86x = 31,008.42 × 9,601.02
  4. Step 4: Simplify right side
    20,686.86x = 297,712,460.59
  5. Step 5: Solve for x
    x = 297,712,460.59/20,686.86
  6. Step 6: Final answer
    x = 14,391.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.