Home / 12,943.68-17,869.38-8,700.90

Finding the Fourth Proportional to 12,943.68, 17,869.38 and 8,700.90

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Solution

The fourth proportional to 12,943.68, 17,869.38 and 8,700.90 is: 12,012.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.68 : 17,869.38 = 8,700.90 : x
  2. Step 2: Convert to fraction form
    12,943.68/17,869.38 = 8,700.90/x
  3. Step 3: Cross multiply
    12,943.68x = 17,869.38 × 8,700.90
  4. Step 4: Simplify right side
    12,943.68x = 155,479,688.44
  5. Step 5: Solve for x
    x = 155,479,688.44/12,943.68
  6. Step 6: Final answer
    x = 12,012.02

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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.