Home / 13,159.20-19,732.40-7,309.60

Finding the Fourth Proportional to 13,159.20, 19,732.40 and 7,309.60

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Solution

The fourth proportional to 13,159.20, 19,732.40 and 7,309.60 is: 10,960.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.20 : 19,732.40 = 7,309.60 : x
  2. Step 2: Convert to fraction form
    13,159.20/19,732.40 = 7,309.60/x
  3. Step 3: Cross multiply
    13,159.20x = 19,732.40 × 7,309.60
  4. Step 4: Simplify right side
    13,159.20x = 144,235,951.04
  5. Step 5: Solve for x
    x = 144,235,951.04/13,159.20
  6. Step 6: Final answer
    x = 10,960.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.