Home / 28,278.06-42,387.93-12,706.62

Finding the Fourth Proportional to 28,278.06, 42,387.93 and 12,706.62

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Solution

The fourth proportional to 28,278.06, 42,387.93 and 12,706.62 is: 19,046.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.06 : 42,387.93 = 12,706.62 : x
  2. Step 2: Convert to fraction form
    28,278.06/42,387.93 = 12,706.62/x
  3. Step 3: Cross multiply
    28,278.06x = 42,387.93 × 12,706.62
  4. Step 4: Simplify right side
    28,278.06x = 538,607,434.31
  5. Step 5: Solve for x
    x = 538,607,434.31/28,278.06
  6. Step 6: Final answer
    x = 19,046.83

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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.