Home / 11,280.28-16,885.80-10,164.92

Finding the Fourth Proportional to 11,280.28, 16,885.80 and 10,164.92

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Solution

The fourth proportional to 11,280.28, 16,885.80 and 10,164.92 is: 15,216.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.28 : 16,885.80 = 10,164.92 : x
  2. Step 2: Convert to fraction form
    11,280.28/16,885.80 = 10,164.92/x
  3. Step 3: Cross multiply
    11,280.28x = 16,885.80 × 10,164.92
  4. Step 4: Simplify right side
    11,280.28x = 171,642,806.14
  5. Step 5: Solve for x
    x = 171,642,806.14/11,280.28
  6. Step 6: Final answer
    x = 15,216.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.