Home / 20,562.59-28,381.70-13,410.35

Finding the Fourth Proportional to 20,562.59, 28,381.70 and 13,410.35

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Solution

The fourth proportional to 20,562.59, 28,381.70 and 13,410.35 is: 18,509.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.59 : 28,381.70 = 13,410.35 : x
  2. Step 2: Convert to fraction form
    20,562.59/28,381.70 = 13,410.35/x
  3. Step 3: Cross multiply
    20,562.59x = 28,381.70 × 13,410.35
  4. Step 4: Simplify right side
    20,562.59x = 380,608,530.60
  5. Step 5: Solve for x
    x = 380,608,530.60/20,562.59
  6. Step 6: Final answer
    x = 18,509.76

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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.