Home / 20,681.13-31,009.95-14,115.27

Finding the Fourth Proportional to 20,681.13, 31,009.95 and 14,115.27

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Solution

The fourth proportional to 20,681.13, 31,009.95 and 14,115.27 is: 21,164.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.13 : 31,009.95 = 14,115.27 : x
  2. Step 2: Convert to fraction form
    20,681.13/31,009.95 = 14,115.27/x
  3. Step 3: Cross multiply
    20,681.13x = 31,009.95 × 14,115.27
  4. Step 4: Simplify right side
    20,681.13x = 437,713,816.94
  5. Step 5: Solve for x
    x = 437,713,816.94/20,681.13
  6. Step 6: Final answer
    x = 21,164.89

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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.