Home / 28,129.85-42,148.02-19,792.37

Finding the Fourth Proportional to 28,129.85, 42,148.02 and 19,792.37

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Solution

The fourth proportional to 28,129.85, 42,148.02 and 19,792.37 is: 29,655.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129.85 : 42,148.02 = 19,792.37 : x
  2. Step 2: Convert to fraction form
    28,129.85/42,148.02 = 19,792.37/x
  3. Step 3: Cross multiply
    28,129.85x = 42,148.02 × 19,792.37
  4. Step 4: Simplify right side
    28,129.85x = 834,209,206.61
  5. Step 5: Solve for x
    x = 834,209,206.61/28,129.85
  6. Step 6: Final answer
    x = 29,655.66

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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.