Home / 20,502.05-28,293.98-11,549.93

Finding the Fourth Proportional to 20,502.05, 28,293.98 and 11,549.93

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Solution

The fourth proportional to 20,502.05, 28,293.98 and 11,549.93 is: 15,939.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.05 : 28,293.98 = 11,549.93 : x
  2. Step 2: Convert to fraction form
    20,502.05/28,293.98 = 11,549.93/x
  3. Step 3: Cross multiply
    20,502.05x = 28,293.98 × 11,549.93
  4. Step 4: Simplify right side
    20,502.05x = 326,793,289.20
  5. Step 5: Solve for x
    x = 326,793,289.20/20,502.05
  6. Step 6: Final answer
    x = 15,939.55

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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.