Home / 28,376.06-39,158.50-15,630.46

Finding the Fourth Proportional to 28,376.06, 39,158.50 and 15,630.46

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Solution

The fourth proportional to 28,376.06, 39,158.50 and 15,630.46 is: 21,569.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,376.06 : 39,158.50 = 15,630.46 : x
  2. Step 2: Convert to fraction form
    28,376.06/39,158.50 = 15,630.46/x
  3. Step 3: Cross multiply
    28,376.06x = 39,158.50 × 15,630.46
  4. Step 4: Simplify right side
    28,376.06x = 612,065,367.91
  5. Step 5: Solve for x
    x = 612,065,367.91/28,376.06
  6. Step 6: Final answer
    x = 21,569.78

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1.5x scale

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.