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Finding the Fourth Proportional to 29,702.44, 40,987.80 and 16,271.20

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Solution

The fourth proportional to 29,702.44, 40,987.80 and 16,271.20 is: 22,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,702.44 : 40,987.80 = 16,271.20 : x
  2. Step 2: Convert to fraction form
    29,702.44/40,987.80 = 16,271.20/x
  3. Step 3: Cross multiply
    29,702.44x = 40,987.80 × 16,271.20
  4. Step 4: Simplify right side
    29,702.44x = 666,920,691.36
  5. Step 5: Solve for x
    x = 666,920,691.36/29,702.44
  6. Step 6: Final answer
    x = 22,453.40

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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.