Home / 11,129.50-15,360.51-6,412.96

Finding the Fourth Proportional to 11,129.50, 15,360.51 and 6,412.96

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Solution

The fourth proportional to 11,129.50, 15,360.51 and 6,412.96 is: 8,850.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.50 : 15,360.51 = 6,412.96 : x
  2. Step 2: Convert to fraction form
    11,129.50/15,360.51 = 6,412.96/x
  3. Step 3: Cross multiply
    11,129.50x = 15,360.51 × 6,412.96
  4. Step 4: Simplify right side
    11,129.50x = 98,506,336.21
  5. Step 5: Solve for x
    x = 98,506,336.21/11,129.50
  6. Step 6: Final answer
    x = 8,850.92

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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.