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Finding the Fourth Proportional to 14,458.68, 19,952.46 and 8,490.20

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Solution

The fourth proportional to 14,458.68, 19,952.46 and 8,490.20 is: 11,716.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,458.68 : 19,952.46 = 8,490.20 : x
  2. Step 2: Convert to fraction form
    14,458.68/19,952.46 = 8,490.20/x
  3. Step 3: Cross multiply
    14,458.68x = 19,952.46 × 8,490.20
  4. Step 4: Simplify right side
    14,458.68x = 169,400,276.13
  5. Step 5: Solve for x
    x = 169,400,276.13/14,458.68
  6. Step 6: Final answer
    x = 11,716.16

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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.