Home / 11,165.12-15,407.86-6,129.40

Finding the Fourth Proportional to 11,165.12, 15,407.86 and 6,129.40

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Solution

The fourth proportional to 11,165.12, 15,407.86 and 6,129.40 is: 8,458.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,165.12 : 15,407.86 = 6,129.40 : x
  2. Step 2: Convert to fraction form
    11,165.12/15,407.86 = 6,129.40/x
  3. Step 3: Cross multiply
    11,165.12x = 15,407.86 × 6,129.40
  4. Step 4: Simplify right side
    11,165.12x = 94,440,937.08
  5. Step 5: Solve for x
    x = 94,440,937.08/11,165.12
  6. Step 6: Final answer
    x = 8,458.57

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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.