Home / 20,342,452-28,061,402.54-12,886,459.38

Finding the Fourth Proportional to 20,342,452, 28,061,402.54 and 12,886,459.38

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Solution

The fourth proportional to 20,342,452, 28,061,402.54 and 12,886,459.38 is: 17,776,230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,342,452 : 28,061,402.54 = 12,886,459.38 : x
  2. Step 2: Convert to fraction form
    20,342,452/28,061,402.54 = 12,886,459.38/x
  3. Step 3: Cross multiply
    20,342,452x = 28,061,402.54 × 12,886,459.38
  4. Step 4: Simplify right side
    20,342,452x = 361,612,123,913,106.56
  5. Step 5: Solve for x
    x = 361,612,123,913,106.56/20,342,452
  6. Step 6: Final answer
    x = 17,776,230.90

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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.