Home / 13,195,841.32-18,209,510.12-7,690,112.56

Finding the Fourth Proportional to 13,195,841.32, 18,209,510.12 and 7,690,112.56

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Solution

The fourth proportional to 13,195,841.32, 18,209,510.12 and 7,690,112.56 is: 10,611,917.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195,841.32 : 18,209,510.12 = 7,690,112.56 : x
  2. Step 2: Convert to fraction form
    13,195,841.32/18,209,510.12 = 7,690,112.56/x
  3. Step 3: Cross multiply
    13,195,841.32x = 18,209,510.12 × 7,690,112.56
  4. Step 4: Simplify right side
    13,195,841.32x = 140,033,182,483,989.41
  5. Step 5: Solve for x
    x = 140,033,182,483,989.41/13,195,841.32
  6. Step 6: Final answer
    x = 10,611,917.73

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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.