Home / 36,113.28-54,178.76-12,421.20

Finding the Fourth Proportional to 36,113.28, 54,178.76 and 12,421.20

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Solution

The fourth proportional to 36,113.28, 54,178.76 and 12,421.20 is: 18,634.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,113.28 : 54,178.76 = 12,421.20 : x
  2. Step 2: Convert to fraction form
    36,113.28/54,178.76 = 12,421.20/x
  3. Step 3: Cross multiply
    36,113.28x = 54,178.76 × 12,421.20
  4. Step 4: Simplify right side
    36,113.28x = 672,965,213.71
  5. Step 5: Solve for x
    x = 672,965,213.71/36,113.28
  6. Step 6: Final answer
    x = 18,634.84

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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.