Home / 13,559.11-18,709.60-7,589.68

Finding the Fourth Proportional to 13,559.11, 18,709.60 and 7,589.68

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Solution

The fourth proportional to 13,559.11, 18,709.60 and 7,589.68 is: 10,472.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,559.11 : 18,709.60 = 7,589.68 : x
  2. Step 2: Convert to fraction form
    13,559.11/18,709.60 = 7,589.68/x
  3. Step 3: Cross multiply
    13,559.11x = 18,709.60 × 7,589.68
  4. Step 4: Simplify right side
    13,559.11x = 141,999,876.93
  5. Step 5: Solve for x
    x = 141,999,876.93/13,559.11
  6. Step 6: Final answer
    x = 10,472.65

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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.