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Finding the Fourth Proportional to 42,611.34, 63,919.98 and 13,026.90

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Solution

The fourth proportional to 42,611.34, 63,919.98 and 13,026.90 is: 19,541.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,611.34 : 63,919.98 = 13,026.90 : x
  2. Step 2: Convert to fraction form
    42,611.34/63,919.98 = 13,026.90/x
  3. Step 3: Cross multiply
    42,611.34x = 63,919.98 × 13,026.90
  4. Step 4: Simplify right side
    42,611.34x = 832,679,187.46
  5. Step 5: Solve for x
    x = 832,679,187.46/42,611.34
  6. Step 6: Final answer
    x = 19,541.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.