Home / 13,347.52-18,419.22-7,378.78

Finding the Fourth Proportional to 13,347.52, 18,419.22 and 7,378.78

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Solution

The fourth proportional to 13,347.52, 18,419.22 and 7,378.78 is: 10,182.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,347.52 : 18,419.22 = 7,378.78 : x
  2. Step 2: Convert to fraction form
    13,347.52/18,419.22 = 7,378.78/x
  3. Step 3: Cross multiply
    13,347.52x = 18,419.22 × 7,378.78
  4. Step 4: Simplify right side
    13,347.52x = 135,911,372.15
  5. Step 5: Solve for x
    x = 135,911,372.15/13,347.52
  6. Step 6: Final answer
    x = 10,182.52

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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.