Home / 20,923.14-31,390.02-9,686.58

Finding the Fourth Proportional to 20,923.14, 31,390.02 and 9,686.58

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Solution

The fourth proportional to 20,923.14, 31,390.02 and 9,686.58 is: 14,532.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.14 : 31,390.02 = 9,686.58 : x
  2. Step 2: Convert to fraction form
    20,923.14/31,390.02 = 9,686.58/x
  3. Step 3: Cross multiply
    20,923.14x = 31,390.02 × 9,686.58
  4. Step 4: Simplify right side
    20,923.14x = 304,061,939.93
  5. Step 5: Solve for x
    x = 304,061,939.93/20,923.14
  6. Step 6: Final answer
    x = 14,532.33

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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.