Home / 10,986.91-15,162.20-6,271.63

Finding the Fourth Proportional to 10,986.91, 15,162.20 and 6,271.63

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Solution

The fourth proportional to 10,986.91, 15,162.20 and 6,271.63 is: 8,655.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,986.91 : 15,162.20 = 6,271.63 : x
  2. Step 2: Convert to fraction form
    10,986.91/15,162.20 = 6,271.63/x
  3. Step 3: Cross multiply
    10,986.91x = 15,162.20 × 6,271.63
  4. Step 4: Simplify right side
    10,986.91x = 95,091,708.39
  5. Step 5: Solve for x
    x = 95,091,708.39/10,986.91
  6. Step 6: Final answer
    x = 8,655.00

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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.