Home / 21,005,264.70-31,507,897.05-8,221,520.70

Finding the Fourth Proportional to 21,005,264.70, 31,507,897.05 and 8,221,520.70

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Solution

The fourth proportional to 21,005,264.70, 31,507,897.05 and 8,221,520.70 is: 12,332,281.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005,264.70 : 31,507,897.05 = 8,221,520.70 : x
  2. Step 2: Convert to fraction form
    21,005,264.70/31,507,897.05 = 8,221,520.70/x
  3. Step 3: Cross multiply
    21,005,264.70x = 31,507,897.05 × 8,221,520.70
  4. Step 4: Simplify right side
    21,005,264.70x = 259,042,827,810,043.94
  5. Step 5: Solve for x
    x = 259,042,827,810,043.94/21,005,264.70
  6. Step 6: Final answer
    x = 12,332,281.05

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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.