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Finding the Fourth Proportional to 29,702.88, 40,974.45 and 18,368.76

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Solution

The fourth proportional to 29,702.88, 40,974.45 and 18,368.76 is: 25,339.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,702.88 : 40,974.45 = 18,368.76 : x
  2. Step 2: Convert to fraction form
    29,702.88/40,974.45 = 18,368.76/x
  3. Step 3: Cross multiply
    29,702.88x = 40,974.45 × 18,368.76
  4. Step 4: Simplify right side
    29,702.88x = 752,649,838.18
  5. Step 5: Solve for x
    x = 752,649,838.18/29,702.88
  6. Step 6: Final answer
    x = 25,339.29

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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.