Home / 20,373.52-28,115.55-11,881.53

Finding the Fourth Proportional to 20,373.52, 28,115.55 and 11,881.53

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Solution

The fourth proportional to 20,373.52, 28,115.55 and 11,881.53 is: 16,396.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,373.52 : 28,115.55 = 11,881.53 : x
  2. Step 2: Convert to fraction form
    20,373.52/28,115.55 = 11,881.53/x
  3. Step 3: Cross multiply
    20,373.52x = 28,115.55 × 11,881.53
  4. Step 4: Simplify right side
    20,373.52x = 334,055,750.79
  5. Step 5: Solve for x
    x = 334,055,750.79/20,373.52
  6. Step 6: Final answer
    x = 16,396.57

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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.