Home / 20,581.86-28,402.98-11,150.46

Finding the Fourth Proportional to 20,581.86, 28,402.98 and 11,150.46

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Solution

The fourth proportional to 20,581.86, 28,402.98 and 11,150.46 is: 15,387.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.86 : 28,402.98 = 11,150.46 : x
  2. Step 2: Convert to fraction form
    20,581.86/28,402.98 = 11,150.46/x
  3. Step 3: Cross multiply
    20,581.86x = 28,402.98 × 11,150.46
  4. Step 4: Simplify right side
    20,581.86x = 316,706,292.37
  5. Step 5: Solve for x
    x = 316,706,292.37/20,581.86
  6. Step 6: Final answer
    x = 15,387.64

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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.