Home / 15,502.68-21,357.54-10,778.76

Finding the Fourth Proportional to 15,502.68, 21,357.54 and 10,778.76

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Solution

The fourth proportional to 15,502.68, 21,357.54 and 10,778.76 is: 14,849.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.68 : 21,357.54 = 10,778.76 : x
  2. Step 2: Convert to fraction form
    15,502.68/21,357.54 = 10,778.76/x
  3. Step 3: Cross multiply
    15,502.68x = 21,357.54 × 10,778.76
  4. Step 4: Simplify right side
    15,502.68x = 230,207,797.85
  5. Step 5: Solve for x
    x = 230,207,797.85/15,502.68
  6. Step 6: Final answer
    x = 14,849.55

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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.