Home / 19,287.12-28,930.68-6,139.50

Finding the Fourth Proportional to 19,287.12, 28,930.68 and 6,139.50

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Solution

The fourth proportional to 19,287.12, 28,930.68 and 6,139.50 is: 9,209.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,287.12 : 28,930.68 = 6,139.50 : x
  2. Step 2: Convert to fraction form
    19,287.12/28,930.68 = 6,139.50/x
  3. Step 3: Cross multiply
    19,287.12x = 28,930.68 × 6,139.50
  4. Step 4: Simplify right side
    19,287.12x = 177,619,909.86
  5. Step 5: Solve for x
    x = 177,619,909.86/19,287.12
  6. Step 6: Final answer
    x = 9,209.25

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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.