Home / 28,712-39,625.08-16,136.84

Finding the Fourth Proportional to 28,712, 39,625.08 and 16,136.84

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Solution

The fourth proportional to 28,712, 39,625.08 and 16,136.84 is: 22,270.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712 : 39,625.08 = 16,136.84 : x
  2. Step 2: Convert to fraction form
    28,712/39,625.08 = 16,136.84/x
  3. Step 3: Cross multiply
    28,712x = 39,625.08 × 16,136.84
  4. Step 4: Simplify right side
    28,712x = 639,423,575.95
  5. Step 5: Solve for x
    x = 639,423,575.95/28,712
  6. Step 6: Final answer
    x = 22,270.26

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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.