Home / 14,689.62-20,264.16-9,378.85

Finding the Fourth Proportional to 14,689.62, 20,264.16 and 9,378.85

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Solution

The fourth proportional to 14,689.62, 20,264.16 and 9,378.85 is: 12,938.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,689.62 : 20,264.16 = 9,378.85 : x
  2. Step 2: Convert to fraction form
    14,689.62/20,264.16 = 9,378.85/x
  3. Step 3: Cross multiply
    14,689.62x = 20,264.16 × 9,378.85
  4. Step 4: Simplify right side
    14,689.62x = 190,054,517.02
  5. Step 5: Solve for x
    x = 190,054,517.02/14,689.62
  6. Step 6: Final answer
    x = 12,938.01

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Half scale
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Double scale
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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.