Home / 12,429.28-17,147.52-7,952.08

Finding the Fourth Proportional to 12,429.28, 17,147.52 and 7,952.08

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Solution

The fourth proportional to 12,429.28, 17,147.52 and 7,952.08 is: 10,970.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.28 : 17,147.52 = 7,952.08 : x
  2. Step 2: Convert to fraction form
    12,429.28/17,147.52 = 7,952.08/x
  3. Step 3: Cross multiply
    12,429.28x = 17,147.52 × 7,952.08
  4. Step 4: Simplify right side
    12,429.28x = 136,358,450.84
  5. Step 5: Solve for x
    x = 136,358,450.84/12,429.28
  6. Step 6: Final answer
    x = 10,970.74

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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.