Home / 20,853,462.34-31,280,130.94-5,291,260.80

Finding the Fourth Proportional to 20,853,462.34, 31,280,130.94 and 5,291,260.80

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Solution

The fourth proportional to 20,853,462.34, 31,280,130.94 and 5,291,260.80 is: 7,936,875.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853,462.34 : 31,280,130.94 = 5,291,260.80 : x
  2. Step 2: Convert to fraction form
    20,853,462.34/31,280,130.94 = 5,291,260.80/x
  3. Step 3: Cross multiply
    20,853,462.34x = 31,280,130.94 × 5,291,260.80
  4. Step 4: Simplify right side
    20,853,462.34x = 165,511,330,661,689.16
  5. Step 5: Solve for x
    x = 165,511,330,661,689.16/20,853,462.34
  6. Step 6: Final answer
    x = 7,936,875.32

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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.