Home / 10,581.45-15,865.74-7,290.92

Finding the Fourth Proportional to 10,581.45, 15,865.74 and 7,290.92

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Solution

The fourth proportional to 10,581.45, 15,865.74 and 7,290.92 is: 10,931.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,581.45 : 15,865.74 = 7,290.92 : x
  2. Step 2: Convert to fraction form
    10,581.45/15,865.74 = 7,290.92/x
  3. Step 3: Cross multiply
    10,581.45x = 15,865.74 × 7,290.92
  4. Step 4: Simplify right side
    10,581.45x = 115,675,761.75
  5. Step 5: Solve for x
    x = 115,675,761.75/10,581.45
  6. Step 6: Final answer
    x = 10,931.94

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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.