Home / 28,473.13-42,685.39-20,126.89

Finding the Fourth Proportional to 28,473.13, 42,685.39 and 20,126.89

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Solution

The fourth proportional to 28,473.13, 42,685.39 and 20,126.89 is: 30,173.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.13 : 42,685.39 = 20,126.89 : x
  2. Step 2: Convert to fraction form
    28,473.13/42,685.39 = 20,126.89/x
  3. Step 3: Cross multiply
    28,473.13x = 42,685.39 × 20,126.89
  4. Step 4: Simplify right side
    28,473.13x = 859,124,227.65
  5. Step 5: Solve for x
    x = 859,124,227.65/28,473.13
  6. Step 6: Final answer
    x = 30,173.16

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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.