Home / 11,581.04-15,981.72-6,275.90

Finding the Fourth Proportional to 11,581.04, 15,981.72 and 6,275.90

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Solution

The fourth proportional to 11,581.04, 15,981.72 and 6,275.90 is: 8,660.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,581.04 : 15,981.72 = 6,275.90 : x
  2. Step 2: Convert to fraction form
    11,581.04/15,981.72 = 6,275.90/x
  3. Step 3: Cross multiply
    11,581.04x = 15,981.72 × 6,275.90
  4. Step 4: Simplify right side
    11,581.04x = 100,299,596.64
  5. Step 5: Solve for x
    x = 100,299,596.64/11,581.04
  6. Step 6: Final answer
    x = 8,660.68

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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.