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Finding the Fourth Proportional to 28,606.60, 42,922.70 and 13,016.20

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Solution

The fourth proportional to 28,606.60, 42,922.70 and 13,016.20 is: 19,530.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,606.60 : 42,922.70 = 13,016.20 : x
  2. Step 2: Convert to fraction form
    28,606.60/42,922.70 = 13,016.20/x
  3. Step 3: Cross multiply
    28,606.60x = 42,922.70 × 13,016.20
  4. Step 4: Simplify right side
    28,606.60x = 558,690,447.74
  5. Step 5: Solve for x
    x = 558,690,447.74/28,606.60
  6. Step 6: Final answer
    x = 19,530.12

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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.