Home / 20,697.42-28,562.55-11,265.99

Finding the Fourth Proportional to 20,697.42, 28,562.55 and 11,265.99

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Solution

The fourth proportional to 20,697.42, 28,562.55 and 11,265.99 is: 15,547.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.42 : 28,562.55 = 11,265.99 : x
  2. Step 2: Convert to fraction form
    20,697.42/28,562.55 = 11,265.99/x
  3. Step 3: Cross multiply
    20,697.42x = 28,562.55 × 11,265.99
  4. Step 4: Simplify right side
    20,697.42x = 321,785,402.67
  5. Step 5: Solve for x
    x = 321,785,402.67/20,697.42
  6. Step 6: Final answer
    x = 15,547.13

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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.