Home / 20,600.51-28,426.05-13,427.15

Finding the Fourth Proportional to 20,600.51, 28,426.05 and 13,427.15

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Solution

The fourth proportional to 20,600.51, 28,426.05 and 13,427.15 is: 18,527.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.51 : 28,426.05 = 13,427.15 : x
  2. Step 2: Convert to fraction form
    20,600.51/28,426.05 = 13,427.15/x
  3. Step 3: Cross multiply
    20,600.51x = 28,426.05 × 13,427.15
  4. Step 4: Simplify right side
    20,600.51x = 381,680,695.13
  5. Step 5: Solve for x
    x = 381,680,695.13/20,600.51
  6. Step 6: Final answer
    x = 18,527.73

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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.