Home / 39,905.70-59,858.55-13,611.30

Finding the Fourth Proportional to 39,905.70, 59,858.55 and 13,611.30

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Solution

The fourth proportional to 39,905.70, 59,858.55 and 13,611.30 is: 20,416.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,905.70 : 59,858.55 = 13,611.30 : x
  2. Step 2: Convert to fraction form
    39,905.70/59,858.55 = 13,611.30/x
  3. Step 3: Cross multiply
    39,905.70x = 59,858.55 × 13,611.30
  4. Step 4: Simplify right side
    39,905.70x = 814,752,681.62
  5. Step 5: Solve for x
    x = 814,752,681.62/39,905.70
  6. Step 6: Final answer
    x = 20,416.95

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1.5x scale

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.