Home / 20,582.28-30,856.14-13,989.96

Finding the Fourth Proportional to 20,582.28, 30,856.14 and 13,989.96

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Solution

The fourth proportional to 20,582.28, 30,856.14 and 13,989.96 is: 20,973.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.28 : 30,856.14 = 13,989.96 : x
  2. Step 2: Convert to fraction form
    20,582.28/30,856.14 = 13,989.96/x
  3. Step 3: Cross multiply
    20,582.28x = 30,856.14 × 13,989.96
  4. Step 4: Simplify right side
    20,582.28x = 431,676,164.35
  5. Step 5: Solve for x
    x = 431,676,164.35/20,582.28
  6. Step 6: Final answer
    x = 20,973.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.