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Finding the Fourth Proportional to 22,985.20, 34,477.80 and 15,612.40

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Solution

The fourth proportional to 22,985.20, 34,477.80 and 15,612.40 is: 23,418.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,985.20 : 34,477.80 = 15,612.40 : x
  2. Step 2: Convert to fraction form
    22,985.20/34,477.80 = 15,612.40/x
  3. Step 3: Cross multiply
    22,985.20x = 34,477.80 × 15,612.40
  4. Step 4: Simplify right side
    22,985.20x = 538,281,204.72
  5. Step 5: Solve for x
    x = 538,281,204.72/22,985.20
  6. Step 6: Final answer
    x = 23,418.60

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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.