Home / 39,539.60-59,290.20-21,990.80

Finding the Fourth Proportional to 39,539.60, 59,290.20 and 21,990.80

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Solution

The fourth proportional to 39,539.60, 59,290.20 and 21,990.80 is: 32,975.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,539.60 : 59,290.20 = 21,990.80 : x
  2. Step 2: Convert to fraction form
    39,539.60/59,290.20 = 21,990.80/x
  3. Step 3: Cross multiply
    39,539.60x = 59,290.20 × 21,990.80
  4. Step 4: Simplify right side
    39,539.60x = 1,303,838,930.16
  5. Step 5: Solve for x
    x = 1,303,838,930.16/39,539.60
  6. Step 6: Final answer
    x = 32,975.52

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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.