Home / 28,186.80-42,243.52-11,527.80

Finding the Fourth Proportional to 28,186.80, 42,243.52 and 11,527.80

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Solution

The fourth proportional to 28,186.80, 42,243.52 and 11,527.80 is: 17,276.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.80 : 42,243.52 = 11,527.80 : x
  2. Step 2: Convert to fraction form
    28,186.80/42,243.52 = 11,527.80/x
  3. Step 3: Cross multiply
    28,186.80x = 42,243.52 × 11,527.80
  4. Step 4: Simplify right side
    28,186.80x = 486,974,849.86
  5. Step 5: Solve for x
    x = 486,974,849.86/28,186.80
  6. Step 6: Final answer
    x = 17,276.70

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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.