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Finding the Fourth Proportional to 14,980.64, 20,639.52 and 10,439.04

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Solution

The fourth proportional to 14,980.64, 20,639.52 and 10,439.04 is: 14,382.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,980.64 : 20,639.52 = 10,439.04 : x
  2. Step 2: Convert to fraction form
    14,980.64/20,639.52 = 10,439.04/x
  3. Step 3: Cross multiply
    14,980.64x = 20,639.52 × 10,439.04
  4. Step 4: Simplify right side
    14,980.64x = 215,456,774.86
  5. Step 5: Solve for x
    x = 215,456,774.86/14,980.64
  6. Step 6: Final answer
    x = 14,382.35

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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.