Home / 20,595.63-28,419.34-13,422.27

Finding the Fourth Proportional to 20,595.63, 28,419.34 and 13,422.27

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Solution

The fourth proportional to 20,595.63, 28,419.34 and 13,422.27 is: 18,521.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,595.63 : 28,419.34 = 13,422.27 : x
  2. Step 2: Convert to fraction form
    20,595.63/28,419.34 = 13,422.27/x
  3. Step 3: Cross multiply
    20,595.63x = 28,419.34 × 13,422.27
  4. Step 4: Simplify right side
    20,595.63x = 381,452,054.70
  5. Step 5: Solve for x
    x = 381,452,054.70/20,595.63
  6. Step 6: Final answer
    x = 18,521.02

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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.