Home / 28,251.84-42,387.48-12,680.40

Finding the Fourth Proportional to 28,251.84, 42,387.48 and 12,680.40

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Solution

The fourth proportional to 28,251.84, 42,387.48 and 12,680.40 is: 19,024.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.84 : 42,387.48 = 12,680.40 : x
  2. Step 2: Convert to fraction form
    28,251.84/42,387.48 = 12,680.40/x
  3. Step 3: Cross multiply
    28,251.84x = 42,387.48 × 12,680.40
  4. Step 4: Simplify right side
    28,251.84x = 537,490,201.39
  5. Step 5: Solve for x
    x = 537,490,201.39/28,251.84
  6. Step 6: Final answer
    x = 19,024.96

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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.