Home / 20,853,461.40-31,280,129.53-5,291,259.86

Finding the Fourth Proportional to 20,853,461.40, 31,280,129.53 and 5,291,259.86

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Solution

The fourth proportional to 20,853,461.40, 31,280,129.53 and 5,291,259.86 is: 7,936,873.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853,461.40 : 31,280,129.53 = 5,291,259.86 : x
  2. Step 2: Convert to fraction form
    20,853,461.40/31,280,129.53 = 5,291,259.86/x
  3. Step 3: Cross multiply
    20,853,461.40x = 31,280,129.53 × 5,291,259.86
  4. Step 4: Simplify right side
    20,853,461.40x = 165,511,293,797,689.69
  5. Step 5: Solve for x
    x = 165,511,293,797,689.69/20,853,461.40
  6. Step 6: Final answer
    x = 7,936,873.91

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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.