Home / 15,122.48-20,869.08-10,398.56

Finding the Fourth Proportional to 15,122.48, 20,869.08 and 10,398.56

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Solution

The fourth proportional to 15,122.48, 20,869.08 and 10,398.56 is: 14,350.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.48 : 20,869.08 = 10,398.56 : x
  2. Step 2: Convert to fraction form
    15,122.48/20,869.08 = 10,398.56/x
  3. Step 3: Cross multiply
    15,122.48x = 20,869.08 × 10,398.56
  4. Step 4: Simplify right side
    15,122.48x = 217,008,380.52
  5. Step 5: Solve for x
    x = 217,008,380.52/15,122.48
  6. Step 6: Final answer
    x = 14,350.05

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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.