Home / 20,747,901.16-31,123,346.40-7,968,405.88

Finding the Fourth Proportional to 20,747,901.16, 31,123,346.40 and 7,968,405.88

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Solution

The fourth proportional to 20,747,901.16, 31,123,346.40 and 7,968,405.88 is: 11,953,182.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747,901.16 : 31,123,346.40 = 7,968,405.88 : x
  2. Step 2: Convert to fraction form
    20,747,901.16/31,123,346.40 = 7,968,405.88/x
  3. Step 3: Cross multiply
    20,747,901.16x = 31,123,346.40 × 7,968,405.88
  4. Step 4: Simplify right side
    20,747,901.16x = 248,003,456,459,036.81
  5. Step 5: Solve for x
    x = 248,003,456,459,036.81/20,747,901.16
  6. Step 6: Final answer
    x = 11,953,182.86

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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.