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Finding the Fourth Proportional to 15,216.80, 22,825.20 and 9,354.40

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Solution

The fourth proportional to 15,216.80, 22,825.20 and 9,354.40 is: 14,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216.80 : 22,825.20 = 9,354.40 : x
  2. Step 2: Convert to fraction form
    15,216.80/22,825.20 = 9,354.40/x
  3. Step 3: Cross multiply
    15,216.80x = 22,825.20 × 9,354.40
  4. Step 4: Simplify right side
    15,216.80x = 213,516,050.88
  5. Step 5: Solve for x
    x = 213,516,050.88/15,216.80
  6. Step 6: Final answer
    x = 14,031.60

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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.