Home / 38,786.91-58,189.47-12,490.66

Finding the Fourth Proportional to 38,786.91, 58,189.47 and 12,490.66

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Solution

The fourth proportional to 38,786.91, 58,189.47 and 12,490.66 is: 18,738.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,786.91 : 58,189.47 = 12,490.66 : x
  2. Step 2: Convert to fraction form
    38,786.91/58,189.47 = 12,490.66/x
  3. Step 3: Cross multiply
    38,786.91x = 58,189.47 × 12,490.66
  4. Step 4: Simplify right side
    38,786.91x = 726,824,885.35
  5. Step 5: Solve for x
    x = 726,824,885.35/38,786.91
  6. Step 6: Final answer
    x = 18,738.92

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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.