Home / 18,987.24-28,484.87-7,141.13

Finding the Fourth Proportional to 18,987.24, 28,484.87 and 7,141.13

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Solution

The fourth proportional to 18,987.24, 28,484.87 and 7,141.13 is: 10,713.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.24 : 28,484.87 = 7,141.13 : x
  2. Step 2: Convert to fraction form
    18,987.24/28,484.87 = 7,141.13/x
  3. Step 3: Cross multiply
    18,987.24x = 28,484.87 × 7,141.13
  4. Step 4: Simplify right side
    18,987.24x = 203,413,981.57
  5. Step 5: Solve for x
    x = 203,413,981.57/18,987.24
  6. Step 6: Final answer
    x = 10,713.19

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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.