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Finding the Fourth Proportional to 34,702.90, 47,890 and 18,787.48

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Solution

The fourth proportional to 34,702.90, 47,890 and 18,787.48 is: 25,926.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,702.90 : 47,890 = 18,787.48 : x
  2. Step 2: Convert to fraction form
    34,702.90/47,890 = 18,787.48/x
  3. Step 3: Cross multiply
    34,702.90x = 47,890 × 18,787.48
  4. Step 4: Simplify right side
    34,702.90x = 899,732,417.20
  5. Step 5: Solve for x
    x = 899,732,417.20/34,702.90
  6. Step 6: Final answer
    x = 25,926.72

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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.