Home / 13,291,965.28-18,342,928.52-7,180,393.78

Finding the Fourth Proportional to 13,291,965.28, 18,342,928.52 and 7,180,393.78

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Solution

The fourth proportional to 13,291,965.28, 18,342,928.52 and 7,180,393.78 is: 9,908,952.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291,965.28 : 18,342,928.52 = 7,180,393.78 : x
  2. Step 2: Convert to fraction form
    13,291,965.28/18,342,928.52 = 7,180,393.78/x
  3. Step 3: Cross multiply
    13,291,965.28x = 18,342,928.52 × 7,180,393.78
  4. Step 4: Simplify right side
    13,291,965.28x = 131,709,449,851,992.61
  5. Step 5: Solve for x
    x = 131,709,449,851,992.61/13,291,965.28
  6. Step 6: Final answer
    x = 9,908,952.29

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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.