Home / 20,393.34-28,158.72-13,226.66

Finding the Fourth Proportional to 20,393.34, 28,158.72 and 13,226.66

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Solution

The fourth proportional to 20,393.34, 28,158.72 and 13,226.66 is: 18,263.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,393.34 : 28,158.72 = 13,226.66 : x
  2. Step 2: Convert to fraction form
    20,393.34/28,158.72 = 13,226.66/x
  3. Step 3: Cross multiply
    20,393.34x = 28,158.72 × 13,226.66
  4. Step 4: Simplify right side
    20,393.34x = 372,445,815.48
  5. Step 5: Solve for x
    x = 372,445,815.48/20,393.34
  6. Step 6: Final answer
    x = 18,263.11

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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.