Home / 15,145,341.47-20,902,216.73-9,343,974.05

Finding the Fourth Proportional to 15,145,341.47, 20,902,216.73 and 9,343,974.05

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Solution

The fourth proportional to 15,145,341.47, 20,902,216.73 and 9,343,974.05 is: 12,895,699.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145,341.47 : 20,902,216.73 = 9,343,974.05 : x
  2. Step 2: Convert to fraction form
    15,145,341.47/20,902,216.73 = 9,343,974.05/x
  3. Step 3: Cross multiply
    15,145,341.47x = 20,902,216.73 × 9,343,974.05
  4. Step 4: Simplify right side
    15,145,341.47x = 195,309,770,836,167.66
  5. Step 5: Solve for x
    x = 195,309,770,836,167.66/15,145,341.47
  6. Step 6: Final answer
    x = 12,895,699.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.