Home / 13,419,108.02-18,515,909.12-7,914,205.46

Finding the Fourth Proportional to 13,419,108.02, 18,515,909.12 and 7,914,205.46

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Solution

The fourth proportional to 13,419,108.02, 18,515,909.12 and 7,914,205.46 is: 10,920,152.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419,108.02 : 18,515,909.12 = 7,914,205.46 : x
  2. Step 2: Convert to fraction form
    13,419,108.02/18,515,909.12 = 7,914,205.46/x
  3. Step 3: Cross multiply
    13,419,108.02x = 18,515,909.12 × 7,914,205.46
  4. Step 4: Simplify right side
    13,419,108.02x = 146,538,709,054,367.81
  5. Step 5: Solve for x
    x = 146,538,709,054,367.81/13,419,108.02
  6. Step 6: Final answer
    x = 10,920,152.73

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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.