Home / 18,742.14-28,130.25-9,984.42

Finding the Fourth Proportional to 18,742.14, 28,130.25 and 9,984.42

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Solution

The fourth proportional to 18,742.14, 28,130.25 and 9,984.42 is: 14,985.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.14 : 28,130.25 = 9,984.42 : x
  2. Step 2: Convert to fraction form
    18,742.14/28,130.25 = 9,984.42/x
  3. Step 3: Cross multiply
    18,742.14x = 28,130.25 × 9,984.42
  4. Step 4: Simplify right side
    18,742.14x = 280,864,230.71
  5. Step 5: Solve for x
    x = 280,864,230.71/18,742.14
  6. Step 6: Final answer
    x = 14,985.71

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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.