Home / 12,555.59-17,327.25-7,520.63

Finding the Fourth Proportional to 12,555.59, 17,327.25 and 7,520.63

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Solution

The fourth proportional to 12,555.59, 17,327.25 and 7,520.63 is: 10,378.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.59 : 17,327.25 = 7,520.63 : x
  2. Step 2: Convert to fraction form
    12,555.59/17,327.25 = 7,520.63/x
  3. Step 3: Cross multiply
    12,555.59x = 17,327.25 × 7,520.63
  4. Step 4: Simplify right side
    12,555.59x = 130,311,749.53
  5. Step 5: Solve for x
    x = 130,311,749.53/12,555.59
  6. Step 6: Final answer
    x = 10,378.79

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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.