Home / 12,285,912.80-18,428,869.20-9,894,428.30

Finding the Fourth Proportional to 12,285,912.80, 18,428,869.20 and 9,894,428.30

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Solution

The fourth proportional to 12,285,912.80, 18,428,869.20 and 9,894,428.30 is: 14,841,642.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285,912.80 : 18,428,869.20 = 9,894,428.30 : x
  2. Step 2: Convert to fraction form
    12,285,912.80/18,428,869.20 = 9,894,428.30/x
  3. Step 3: Cross multiply
    12,285,912.80x = 18,428,869.20 × 9,894,428.30
  4. Step 4: Simplify right side
    12,285,912.80x = 182,343,124,949,478.38
  5. Step 5: Solve for x
    x = 182,343,124,949,478.38/12,285,912.80
  6. Step 6: Final answer
    x = 14,841,642.45

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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.