Home / 39,789.90-59,683.80-18,744.28

Finding the Fourth Proportional to 39,789.90, 59,683.80 and 18,744.28

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Solution

The fourth proportional to 39,789.90, 59,683.80 and 18,744.28 is: 28,115.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,789.90 : 59,683.80 = 18,744.28 : x
  2. Step 2: Convert to fraction form
    39,789.90/59,683.80 = 18,744.28/x
  3. Step 3: Cross multiply
    39,789.90x = 59,683.80 × 18,744.28
  4. Step 4: Simplify right side
    39,789.90x = 1,118,729,858.66
  5. Step 5: Solve for x
    x = 1,118,729,858.66/39,789.90
  6. Step 6: Final answer
    x = 28,115.93

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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.