Home / 18,753.07-28,129.65-4,713.13

Finding the Fourth Proportional to 18,753.07, 28,129.65 and 4,713.13

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Solution

The fourth proportional to 18,753.07, 28,129.65 and 4,713.13 is: 7,069.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,753.07 : 28,129.65 = 4,713.13 : x
  2. Step 2: Convert to fraction form
    18,753.07/28,129.65 = 4,713.13/x
  3. Step 3: Cross multiply
    18,753.07x = 28,129.65 × 4,713.13
  4. Step 4: Simplify right side
    18,753.07x = 132,578,697.30
  5. Step 5: Solve for x
    x = 132,578,697.30/18,753.07
  6. Step 6: Final answer
    x = 7,069.71

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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.