Home / 21,191,420.34-31,791,868.92-7,728,248.34

Finding the Fourth Proportional to 21,191,420.34, 31,791,868.92 and 7,728,248.34

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Solution

The fourth proportional to 21,191,420.34, 31,791,868.92 and 7,728,248.34 is: 11,594,100.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191,420.34 : 31,791,868.92 = 7,728,248.34 : x
  2. Step 2: Convert to fraction form
    21,191,420.34/31,791,868.92 = 7,728,248.34/x
  3. Step 3: Cross multiply
    21,191,420.34x = 31,791,868.92 × 7,728,248.34
  4. Step 4: Simplify right side
    21,191,420.34x = 245,695,458,206,487.59
  5. Step 5: Solve for x
    x = 245,695,458,206,487.59/21,191,420.34
  6. Step 6: Final answer
    x = 11,594,100.55

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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.