Home / 21,256,479.80-31,889,779.11-6,879,547.61

Finding the Fourth Proportional to 21,256,479.80, 31,889,779.11 and 6,879,547.61

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Solution

The fourth proportional to 21,256,479.80, 31,889,779.11 and 6,879,547.61 is: 10,320,958.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,256,479.80 : 31,889,779.11 = 6,879,547.61 : x
  2. Step 2: Convert to fraction form
    21,256,479.80/31,889,779.11 = 6,879,547.61/x
  3. Step 3: Cross multiply
    21,256,479.80x = 31,889,779.11 × 6,879,547.61
  4. Step 4: Simplify right side
    21,256,479.80x = 219,387,253,500,179.53
  5. Step 5: Solve for x
    x = 219,387,253,500,179.53/21,256,479.80
  6. Step 6: Final answer
    x = 10,320,958.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.