Home / 38,619.18-57,947.40-21,088.49

Finding the Fourth Proportional to 38,619.18, 57,947.40 and 21,088.49

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Solution

The fourth proportional to 38,619.18, 57,947.40 and 21,088.49 is: 31,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,619.18 : 57,947.40 = 21,088.49 : x
  2. Step 2: Convert to fraction form
    38,619.18/57,947.40 = 21,088.49/x
  3. Step 3: Cross multiply
    38,619.18x = 57,947.40 × 21,088.49
  4. Step 4: Simplify right side
    38,619.18x = 1,222,022,875.69
  5. Step 5: Solve for x
    x = 1,222,022,875.69/38,619.18
  6. Step 6: Final answer
    x = 31,642.90

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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.