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Finding the Fourth Proportional to 14,480.64, 19,992.96 and 9,763.20

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Solution

The fourth proportional to 14,480.64, 19,992.96 and 9,763.20 is: 13,479.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,480.64 : 19,992.96 = 9,763.20 : x
  2. Step 2: Convert to fraction form
    14,480.64/19,992.96 = 9,763.20/x
  3. Step 3: Cross multiply
    14,480.64x = 19,992.96 × 9,763.20
  4. Step 4: Simplify right side
    14,480.64x = 195,195,267.07
  5. Step 5: Solve for x
    x = 195,195,267.07/14,480.64
  6. Step 6: Final answer
    x = 13,479.74

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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.