Home / 13,399,660.90-18,490,622.25-7,287,958.18

Finding the Fourth Proportional to 13,399,660.90, 18,490,622.25 and 7,287,958.18

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Solution

The fourth proportional to 13,399,660.90, 18,490,622.25 and 7,287,958.18 is: 10,056,887.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399,660.90 : 18,490,622.25 = 7,287,958.18 : x
  2. Step 2: Convert to fraction form
    13,399,660.90/18,490,622.25 = 7,287,958.18/x
  3. Step 3: Cross multiply
    13,399,660.90x = 18,490,622.25 × 7,287,958.18
  4. Step 4: Simplify right side
    13,399,660.90x = 134,758,881,680,177.50
  5. Step 5: Solve for x
    x = 134,758,881,680,177.50/13,399,660.90
  6. Step 6: Final answer
    x = 10,056,887.46

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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.