Home / 13,591.52-18,756.60-9,619.76

Finding the Fourth Proportional to 13,591.52, 18,756.60 and 9,619.76

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Solution

The fourth proportional to 13,591.52, 18,756.60 and 9,619.76 is: 13,275.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.52 : 18,756.60 = 9,619.76 : x
  2. Step 2: Convert to fraction form
    13,591.52/18,756.60 = 9,619.76/x
  3. Step 3: Cross multiply
    13,591.52x = 18,756.60 × 9,619.76
  4. Step 4: Simplify right side
    13,591.52x = 180,433,990.42
  5. Step 5: Solve for x
    x = 180,433,990.42/13,591.52
  6. Step 6: Final answer
    x = 13,275.48

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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.