Home / 10,121,021.20-15,181,531.80-9,144,744.40

Finding the Fourth Proportional to 10,121,021.20, 15,181,531.80 and 9,144,744.40

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Solution

The fourth proportional to 10,121,021.20, 15,181,531.80 and 9,144,744.40 is: 13,717,116.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121,021.20 : 15,181,531.80 = 9,144,744.40 : x
  2. Step 2: Convert to fraction form
    10,121,021.20/15,181,531.80 = 9,144,744.40/x
  3. Step 3: Cross multiply
    10,121,021.20x = 15,181,531.80 × 9,144,744.40
  4. Step 4: Simplify right side
    10,121,021.20x = 138,831,227,911,471.94
  5. Step 5: Solve for x
    x = 138,831,227,911,471.94/10,121,021.20
  6. Step 6: Final answer
    x = 13,717,116.60

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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.