Home / 10,855.28-14,980.29-6,139.46

Finding the Fourth Proportional to 10,855.28, 14,980.29 and 6,139.46

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Solution

The fourth proportional to 10,855.28, 14,980.29 and 6,139.46 is: 8,472.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,855.28 : 14,980.29 = 6,139.46 : x
  2. Step 2: Convert to fraction form
    10,855.28/14,980.29 = 6,139.46/x
  3. Step 3: Cross multiply
    10,855.28x = 14,980.29 × 6,139.46
  4. Step 4: Simplify right side
    10,855.28x = 91,970,891.24
  5. Step 5: Solve for x
    x = 91,970,891.24/10,855.28
  6. Step 6: Final answer
    x = 8,472.46

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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.