Home / 21,021,721.80-31,537,248.30-9,659,430.60

Finding the Fourth Proportional to 21,021,721.80, 31,537,248.30 and 9,659,430.60

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Solution

The fourth proportional to 21,021,721.80, 31,537,248.30 and 9,659,430.60 is: 14,491,289.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021,721.80 : 31,537,248.30 = 9,659,430.60 : x
  2. Step 2: Convert to fraction form
    21,021,721.80/31,537,248.30 = 9,659,430.60/x
  3. Step 3: Cross multiply
    21,021,721.80x = 31,537,248.30 × 9,659,430.60
  4. Step 4: Simplify right side
    21,021,721.80x = 304,631,861,268,818
  5. Step 5: Solve for x
    x = 304,631,861,268,818/21,021,721.80
  6. Step 6: Final answer
    x = 14,491,289.73

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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.