Home / 15,129,379.76-20,878,445.14-8,603,009.69

Finding the Fourth Proportional to 15,129,379.76, 20,878,445.14 and 8,603,009.69

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Solution

The fourth proportional to 15,129,379.76, 20,878,445.14 and 8,603,009.69 is: 11,872,097.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129,379.76 : 20,878,445.14 = 8,603,009.69 : x
  2. Step 2: Convert to fraction form
    15,129,379.76/20,878,445.14 = 8,603,009.69/x
  3. Step 3: Cross multiply
    15,129,379.76x = 20,878,445.14 × 8,603,009.69
  4. Step 4: Simplify right side
    15,129,379.76x = 179,617,465,725,653.66
  5. Step 5: Solve for x
    x = 179,617,465,725,653.66/15,129,379.76
  6. Step 6: Final answer
    x = 11,872,097.11

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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.