Home / 39,963.40-59,966.70-17,780.20

Finding the Fourth Proportional to 39,963.40, 59,966.70 and 17,780.20

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Solution

The fourth proportional to 39,963.40, 59,966.70 and 17,780.20 is: 26,679.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,963.40 : 59,966.70 = 17,780.20 : x
  2. Step 2: Convert to fraction form
    39,963.40/59,966.70 = 17,780.20/x
  3. Step 3: Cross multiply
    39,963.40x = 59,966.70 × 17,780.20
  4. Step 4: Simplify right side
    39,963.40x = 1,066,219,919.34
  5. Step 5: Solve for x
    x = 1,066,219,919.34/39,963.40
  6. Step 6: Final answer
    x = 26,679.91

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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.