Home / 42,170.88-63,256.20-12,588

Finding the Fourth Proportional to 42,170.88, 63,256.20 and 12,588

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Solution

The fourth proportional to 42,170.88, 63,256.20 and 12,588 is: 18,881.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,170.88 : 63,256.20 = 12,588 : x
  2. Step 2: Convert to fraction form
    42,170.88/63,256.20 = 12,588/x
  3. Step 3: Cross multiply
    42,170.88x = 63,256.20 × 12,588
  4. Step 4: Simplify right side
    42,170.88x = 796,269,045.60
  5. Step 5: Solve for x
    x = 796,269,045.60/42,170.88
  6. Step 6: Final answer
    x = 18,881.96

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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.