Home / 20,970,854.78-31,461,047.56-6,399,077.79

Finding the Fourth Proportional to 20,970,854.78, 31,461,047.56 and 6,399,077.79

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Solution

The fourth proportional to 20,970,854.78, 31,461,047.56 and 6,399,077.79 is: 9,600,070.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970,854.78 : 31,461,047.56 = 6,399,077.79 : x
  2. Step 2: Convert to fraction form
    20,970,854.78/31,461,047.56 = 6,399,077.79/x
  3. Step 3: Cross multiply
    20,970,854.78x = 31,461,047.56 × 6,399,077.79
  4. Step 4: Simplify right side
    20,970,854.78x = 201,321,690,817,307.47
  5. Step 5: Solve for x
    x = 201,321,690,817,307.47/20,970,854.78
  6. Step 6: Final answer
    x = 9,600,070.81

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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.