Home / 12,239.36-16,882.80-10,671.20

Finding the Fourth Proportional to 12,239.36, 16,882.80 and 10,671.20

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Solution

The fourth proportional to 12,239.36, 16,882.80 and 10,671.20 is: 14,719.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.36 : 16,882.80 = 10,671.20 : x
  2. Step 2: Convert to fraction form
    12,239.36/16,882.80 = 10,671.20/x
  3. Step 3: Cross multiply
    12,239.36x = 16,882.80 × 10,671.20
  4. Step 4: Simplify right side
    12,239.36x = 180,159,735.36
  5. Step 5: Solve for x
    x = 180,159,735.36/12,239.36
  6. Step 6: Final answer
    x = 14,719.70

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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.