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Finding the Fourth Proportional to 15,117.20, 22,675.80 and 8,880.20

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Solution

The fourth proportional to 15,117.20, 22,675.80 and 8,880.20 is: 13,320.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.20 : 22,675.80 = 8,880.20 : x
  2. Step 2: Convert to fraction form
    15,117.20/22,675.80 = 8,880.20/x
  3. Step 3: Cross multiply
    15,117.20x = 22,675.80 × 8,880.20
  4. Step 4: Simplify right side
    15,117.20x = 201,365,639.16
  5. Step 5: Solve for x
    x = 201,365,639.16/15,117.20
  6. Step 6: Final answer
    x = 13,320.30

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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.