Home / 20,455.55-28,225.38-11,502.52

Finding the Fourth Proportional to 20,455.55, 28,225.38 and 11,502.52

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Solution

The fourth proportional to 20,455.55, 28,225.38 and 11,502.52 is: 15,871.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.55 : 28,225.38 = 11,502.52 : x
  2. Step 2: Convert to fraction form
    20,455.55/28,225.38 = 11,502.52/x
  3. Step 3: Cross multiply
    20,455.55x = 28,225.38 × 11,502.52
  4. Step 4: Simplify right side
    20,455.55x = 324,663,064.59
  5. Step 5: Solve for x
    x = 324,663,064.59/20,455.55
  6. Step 6: Final answer
    x = 15,871.63

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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.