Home / 28,420,085.18-39,219,689.91-15,367,312.85

Finding the Fourth Proportional to 28,420,085.18, 39,219,689.91 and 15,367,312.85

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Solution

The fourth proportional to 28,420,085.18, 39,219,689.91 and 15,367,312.85 is: 21,206,876.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,420,085.18 : 39,219,689.91 = 15,367,312.85 : x
  2. Step 2: Convert to fraction form
    28,420,085.18/39,219,689.91 = 15,367,312.85/x
  3. Step 3: Cross multiply
    28,420,085.18x = 39,219,689.91 × 15,367,312.85
  4. Step 4: Simplify right side
    28,420,085.18x = 602,701,244,726,958.25
  5. Step 5: Solve for x
    x = 602,701,244,726,958.25/28,420,085.18
  6. Step 6: Final answer
    x = 21,206,876.79

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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.