Home / 20,315,217.96-28,035,809.10-11,148,188.76

Finding the Fourth Proportional to 20,315,217.96, 28,035,809.10 and 11,148,188.76

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Solution

The fourth proportional to 20,315,217.96, 28,035,809.10 and 11,148,188.76 is: 15,384,944.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315,217.96 : 28,035,809.10 = 11,148,188.76 : x
  2. Step 2: Convert to fraction form
    20,315,217.96/28,035,809.10 = 11,148,188.76/x
  3. Step 3: Cross multiply
    20,315,217.96x = 28,035,809.10 × 11,148,188.76
  4. Step 4: Simplify right side
    20,315,217.96x = 312,548,491,886,125.75
  5. Step 5: Solve for x
    x = 312,548,491,886,125.75/20,315,217.96
  6. Step 6: Final answer
    x = 15,384,944.06

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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.