Home / 20,988.55-28,963.84-12,035.53

Finding the Fourth Proportional to 20,988.55, 28,963.84 and 12,035.53

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Solution

The fourth proportional to 20,988.55, 28,963.84 and 12,035.53 is: 16,608.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988.55 : 28,963.84 = 12,035.53 : x
  2. Step 2: Convert to fraction form
    20,988.55/28,963.84 = 12,035.53/x
  3. Step 3: Cross multiply
    20,988.55x = 28,963.84 × 12,035.53
  4. Step 4: Simplify right side
    20,988.55x = 348,595,165.24
  5. Step 5: Solve for x
    x = 348,595,165.24/20,988.55
  6. Step 6: Final answer
    x = 16,608.83

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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.