Home / 10,986.81-15,162.87-6,271.80

Finding the Fourth Proportional to 10,986.81, 15,162.87 and 6,271.80

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Solution

The fourth proportional to 10,986.81, 15,162.87 and 6,271.80 is: 8,655.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,986.81 : 15,162.87 = 6,271.80 : x
  2. Step 2: Convert to fraction form
    10,986.81/15,162.87 = 6,271.80/x
  3. Step 3: Cross multiply
    10,986.81x = 15,162.87 × 6,271.80
  4. Step 4: Simplify right side
    10,986.81x = 95,098,488.07
  5. Step 5: Solve for x
    x = 95,098,488.07/10,986.81
  6. Step 6: Final answer
    x = 8,655.70

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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.