Home / 20,937.42-28,886.63-12,862.53

Finding the Fourth Proportional to 20,937.42, 28,886.63 and 12,862.53

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Solution

The fourth proportional to 20,937.42, 28,886.63 and 12,862.53 is: 17,745.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.42 : 28,886.63 = 12,862.53 : x
  2. Step 2: Convert to fraction form
    20,937.42/28,886.63 = 12,862.53/x
  3. Step 3: Cross multiply
    20,937.42x = 28,886.63 × 12,862.53
  4. Step 4: Simplify right side
    20,937.42x = 371,555,080.66
  5. Step 5: Solve for x
    x = 371,555,080.66/20,937.42
  6. Step 6: Final answer
    x = 17,745.98

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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.