Home / 12,280.97-18,417.85-4,382.21

Finding the Fourth Proportional to 12,280.97, 18,417.85 and 4,382.21

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Solution

The fourth proportional to 12,280.97, 18,417.85 and 4,382.21 is: 6,572.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.97 : 18,417.85 = 4,382.21 : x
  2. Step 2: Convert to fraction form
    12,280.97/18,417.85 = 4,382.21/x
  3. Step 3: Cross multiply
    12,280.97x = 18,417.85 × 4,382.21
  4. Step 4: Simplify right side
    12,280.97x = 80,710,886.45
  5. Step 5: Solve for x
    x = 80,710,886.45/12,280.97
  6. Step 6: Final answer
    x = 6,572.03

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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.