Home / 11,378.13-15,701.34-8,392.89

Finding the Fourth Proportional to 11,378.13, 15,701.34 and 8,392.89

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Solution

The fourth proportional to 11,378.13, 15,701.34 and 8,392.89 is: 11,581.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,378.13 : 15,701.34 = 8,392.89 : x
  2. Step 2: Convert to fraction form
    11,378.13/15,701.34 = 8,392.89/x
  3. Step 3: Cross multiply
    11,378.13x = 15,701.34 × 8,392.89
  4. Step 4: Simplify right side
    11,378.13x = 131,779,619.47
  5. Step 5: Solve for x
    x = 131,779,619.47/11,378.13
  6. Step 6: Final answer
    x = 11,581.83

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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.