Home / 39,490-59,244.36-11,788.72

Finding the Fourth Proportional to 39,490, 59,244.36 and 11,788.72

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Solution

The fourth proportional to 39,490, 59,244.36 and 11,788.72 is: 17,685.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,490 : 59,244.36 = 11,788.72 : x
  2. Step 2: Convert to fraction form
    39,490/59,244.36 = 11,788.72/x
  3. Step 3: Cross multiply
    39,490x = 59,244.36 × 11,788.72
  4. Step 4: Simplify right side
    39,490x = 698,415,171.62
  5. Step 5: Solve for x
    x = 698,415,171.62/39,490
  6. Step 6: Final answer
    x = 17,685.87

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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.