Home / 21,015,780.80-31,521,338.40-5,871,243.20

Finding the Fourth Proportional to 21,015,780.80, 31,521,338.40 and 5,871,243.20

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Solution

The fourth proportional to 21,015,780.80, 31,521,338.40 and 5,871,243.20 is: 8,806,213.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015,780.80 : 31,521,338.40 = 5,871,243.20 : x
  2. Step 2: Convert to fraction form
    21,015,780.80/31,521,338.40 = 5,871,243.20/x
  3. Step 3: Cross multiply
    21,015,780.80x = 31,521,338.40 × 5,871,243.20
  4. Step 4: Simplify right side
    21,015,780.80x = 185,069,443,735,898.88
  5. Step 5: Solve for x
    x = 185,069,443,735,898.88/21,015,780.80
  6. Step 6: Final answer
    x = 8,806,213.08

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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.