Home / 20,529.29-28,330.43-11,097.86

Finding the Fourth Proportional to 20,529.29, 28,330.43 and 11,097.86

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Solution

The fourth proportional to 20,529.29, 28,330.43 and 11,097.86 is: 15,315.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.29 : 28,330.43 = 11,097.86 : x
  2. Step 2: Convert to fraction form
    20,529.29/28,330.43 = 11,097.86/x
  3. Step 3: Cross multiply
    20,529.29x = 28,330.43 × 11,097.86
  4. Step 4: Simplify right side
    20,529.29x = 314,406,948.74
  5. Step 5: Solve for x
    x = 314,406,948.74/20,529.29
  6. Step 6: Final answer
    x = 15,315.05

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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.