Home / 12,142.40-16,751.04-10,371.20

Finding the Fourth Proportional to 12,142.40, 16,751.04 and 10,371.20

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Solution

The fourth proportional to 12,142.40, 16,751.04 and 10,371.20 is: 14,307.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142.40 : 16,751.04 = 10,371.20 : x
  2. Step 2: Convert to fraction form
    12,142.40/16,751.04 = 10,371.20/x
  3. Step 3: Cross multiply
    12,142.40x = 16,751.04 × 10,371.20
  4. Step 4: Simplify right side
    12,142.40x = 173,728,386.05
  5. Step 5: Solve for x
    x = 173,728,386.05/12,142.40
  6. Step 6: Final answer
    x = 14,307.58

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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.