Home / 15,539.20-23,308.80-9,318.40

Finding the Fourth Proportional to 15,539.20, 23,308.80 and 9,318.40

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Solution

The fourth proportional to 15,539.20, 23,308.80 and 9,318.40 is: 13,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,539.20 : 23,308.80 = 9,318.40 : x
  2. Step 2: Convert to fraction form
    15,539.20/23,308.80 = 9,318.40/x
  3. Step 3: Cross multiply
    15,539.20x = 23,308.80 × 9,318.40
  4. Step 4: Simplify right side
    15,539.20x = 217,200,721.92
  5. Step 5: Solve for x
    x = 217,200,721.92/15,539.20
  6. Step 6: Final answer
    x = 13,977.60

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Similar ratio
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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.