Home / 18,747.04-28,104.18-9,988.24

Finding the Fourth Proportional to 18,747.04, 28,104.18 and 9,988.24

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Solution

The fourth proportional to 18,747.04, 28,104.18 and 9,988.24 is: 14,973.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.04 : 28,104.18 = 9,988.24 : x
  2. Step 2: Convert to fraction form
    18,747.04/28,104.18 = 9,988.24/x
  3. Step 3: Cross multiply
    18,747.04x = 28,104.18 × 9,988.24
  4. Step 4: Simplify right side
    18,747.04x = 280,711,294.84
  5. Step 5: Solve for x
    x = 280,711,294.84/18,747.04
  6. Step 6: Final answer
    x = 14,973.63

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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.