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Finding the Fourth Proportional to 29,658, 40,928.04 and 18,480

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Solution

The fourth proportional to 29,658, 40,928.04 and 18,480 is: 25,502.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,658 : 40,928.04 = 18,480 : x
  2. Step 2: Convert to fraction form
    29,658/40,928.04 = 18,480/x
  3. Step 3: Cross multiply
    29,658x = 40,928.04 × 18,480
  4. Step 4: Simplify right side
    29,658x = 756,350,179.20
  5. Step 5: Solve for x
    x = 756,350,179.20/29,658
  6. Step 6: Final answer
    x = 25,502.40

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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.