Home / 21,312,076.80-31,972,262.40-9,181,516.80

Finding the Fourth Proportional to 21,312,076.80, 31,972,262.40 and 9,181,516.80

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Solution

The fourth proportional to 21,312,076.80, 31,972,262.40 and 9,181,516.80 is: 13,774,061.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312,076.80 : 31,972,262.40 = 9,181,516.80 : x
  2. Step 2: Convert to fraction form
    21,312,076.80/31,972,262.40 = 9,181,516.80/x
  3. Step 3: Cross multiply
    21,312,076.80x = 31,972,262.40 × 9,181,516.80
  4. Step 4: Simplify right side
    21,312,076.80x = 293,553,864,359,608.31
  5. Step 5: Solve for x
    x = 293,553,864,359,608.31/21,312,076.80
  6. Step 6: Final answer
    x = 13,774,061.87

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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.