Home / 38,786.78-58,143.06-12,473

Finding the Fourth Proportional to 38,786.78, 58,143.06 and 12,473

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Solution

The fourth proportional to 38,786.78, 58,143.06 and 12,473 is: 18,697.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,786.78 : 58,143.06 = 12,473 : x
  2. Step 2: Convert to fraction form
    38,786.78/58,143.06 = 12,473/x
  3. Step 3: Cross multiply
    38,786.78x = 58,143.06 × 12,473
  4. Step 4: Simplify right side
    38,786.78x = 725,218,387.38
  5. Step 5: Solve for x
    x = 725,218,387.38/38,786.78
  6. Step 6: Final answer
    x = 18,697.57

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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.