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Finding the Fourth Proportional to 12,944.68, 17,870.76 and 8,701.90

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Solution

The fourth proportional to 12,944.68, 17,870.76 and 8,701.90 is: 12,013.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,944.68 : 17,870.76 = 8,701.90 : x
  2. Step 2: Convert to fraction form
    12,944.68/17,870.76 = 8,701.90/x
  3. Step 3: Cross multiply
    12,944.68x = 17,870.76 × 8,701.90
  4. Step 4: Simplify right side
    12,944.68x = 155,509,566.44
  5. Step 5: Solve for x
    x = 155,509,566.44/12,944.68
  6. Step 6: Final answer
    x = 12,013.40

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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.