Home / 28,420,082.18-39,219,685.78-15,367,309.86

Finding the Fourth Proportional to 28,420,082.18, 39,219,685.78 and 15,367,309.86

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Solution

The fourth proportional to 28,420,082.18, 39,219,685.78 and 15,367,309.86 is: 21,206,872.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,420,082.18 : 39,219,685.78 = 15,367,309.86 : x
  2. Step 2: Convert to fraction form
    28,420,082.18/39,219,685.78 = 15,367,309.86/x
  3. Step 3: Cross multiply
    28,420,082.18x = 39,219,685.78 × 15,367,309.86
  4. Step 4: Simplify right side
    28,420,082.18x = 602,701,063,993,095.75
  5. Step 5: Solve for x
    x = 602,701,063,993,095.75/28,420,082.18
  6. Step 6: Final answer
    x = 21,206,872.67

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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.