Home / 13,412.20-20,118.30-9,956.20

Finding the Fourth Proportional to 13,412.20, 20,118.30 and 9,956.20

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Solution

The fourth proportional to 13,412.20, 20,118.30 and 9,956.20 is: 14,934.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.20 : 20,118.30 = 9,956.20 : x
  2. Step 2: Convert to fraction form
    13,412.20/20,118.30 = 9,956.20/x
  3. Step 3: Cross multiply
    13,412.20x = 20,118.30 × 9,956.20
  4. Step 4: Simplify right side
    13,412.20x = 200,301,818.46
  5. Step 5: Solve for x
    x = 200,301,818.46/13,412.20
  6. Step 6: Final answer
    x = 14,934.30

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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.