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Finding the Fourth Proportional to 29,280, 40,408.56 and 18,104.16

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Solution

The fourth proportional to 29,280, 40,408.56 and 18,104.16 is: 24,985.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,280 : 40,408.56 = 18,104.16 : x
  2. Step 2: Convert to fraction form
    29,280/40,408.56 = 18,104.16/x
  3. Step 3: Cross multiply
    29,280x = 40,408.56 × 18,104.16
  4. Step 4: Simplify right side
    29,280x = 731,563,035.61
  5. Step 5: Solve for x
    x = 731,563,035.61/29,280
  6. Step 6: Final answer
    x = 24,985.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.