Home / 12,399.38-17,125.58-10,390.07

Finding the Fourth Proportional to 12,399.38, 17,125.58 and 10,390.07

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Solution

The fourth proportional to 12,399.38, 17,125.58 and 10,390.07 is: 14,350.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399.38 : 17,125.58 = 10,390.07 : x
  2. Step 2: Convert to fraction form
    12,399.38/17,125.58 = 10,390.07/x
  3. Step 3: Cross multiply
    12,399.38x = 17,125.58 × 10,390.07
  4. Step 4: Simplify right side
    12,399.38x = 177,935,985.34
  5. Step 5: Solve for x
    x = 177,935,985.34/12,399.38
  6. Step 6: Final answer
    x = 14,350.40

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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.