Home / 11,281.74-15,581.08-7,755.18

Finding the Fourth Proportional to 11,281.74, 15,581.08 and 7,755.18

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Solution

The fourth proportional to 11,281.74, 15,581.08 and 7,755.18 is: 10,710.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,281.74 : 15,581.08 = 7,755.18 : x
  2. Step 2: Convert to fraction form
    11,281.74/15,581.08 = 7,755.18/x
  3. Step 3: Cross multiply
    11,281.74x = 15,581.08 × 7,755.18
  4. Step 4: Simplify right side
    11,281.74x = 120,834,079.99
  5. Step 5: Solve for x
    x = 120,834,079.99/11,281.74
  6. Step 6: Final answer
    x = 10,710.59

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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.