Home / 10,985.94-15,162.21-6,271.38

Finding the Fourth Proportional to 10,985.94, 15,162.21 and 6,271.38

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Solution

The fourth proportional to 10,985.94, 15,162.21 and 6,271.38 is: 8,655.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,985.94 : 15,162.21 = 6,271.38 : x
  2. Step 2: Convert to fraction form
    10,985.94/15,162.21 = 6,271.38/x
  3. Step 3: Cross multiply
    10,985.94x = 15,162.21 × 6,271.38
  4. Step 4: Simplify right side
    10,985.94x = 95,087,980.55
  5. Step 5: Solve for x
    x = 95,087,980.55/10,985.94
  6. Step 6: Final answer
    x = 8,655.43

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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.