Home / 38,690.41-58,052.02-21,139.74

Finding the Fourth Proportional to 38,690.41, 58,052.02 and 21,139.74

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Solution

The fourth proportional to 38,690.41, 58,052.02 and 21,139.74 is: 31,718.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,690.41 : 58,052.02 = 21,139.74 : x
  2. Step 2: Convert to fraction form
    38,690.41/58,052.02 = 21,139.74/x
  3. Step 3: Cross multiply
    38,690.41x = 58,052.02 × 21,139.74
  4. Step 4: Simplify right side
    38,690.41x = 1,227,204,378.37
  5. Step 5: Solve for x
    x = 1,227,204,378.37/38,690.41
  6. Step 6: Final answer
    x = 31,718.57

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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.