Home / 28,116.95-42,142.61-15,630.99

Finding the Fourth Proportional to 28,116.95, 42,142.61 and 15,630.99

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Solution

The fourth proportional to 28,116.95, 42,142.61 and 15,630.99 is: 23,428.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116.95 : 42,142.61 = 15,630.99 : x
  2. Step 2: Convert to fraction form
    28,116.95/42,142.61 = 15,630.99/x
  3. Step 3: Cross multiply
    28,116.95x = 42,142.61 × 15,630.99
  4. Step 4: Simplify right side
    28,116.95x = 658,730,637.33
  5. Step 5: Solve for x
    x = 658,730,637.33/28,116.95
  6. Step 6: Final answer
    x = 23,428.24

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1.5x scale

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.