Home / 39,972.56-59,959.08-17,780.72

Finding the Fourth Proportional to 39,972.56, 59,959.08 and 17,780.72

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Solution

The fourth proportional to 39,972.56, 59,959.08 and 17,780.72 is: 26,671.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,972.56 : 59,959.08 = 17,780.72 : x
  2. Step 2: Convert to fraction form
    39,972.56/59,959.08 = 17,780.72/x
  3. Step 3: Cross multiply
    39,972.56x = 59,959.08 × 17,780.72
  4. Step 4: Simplify right side
    39,972.56x = 1,066,115,612.94
  5. Step 5: Solve for x
    x = 1,066,115,612.94/39,972.56
  6. Step 6: Final answer
    x = 26,671.19

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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.