Home / 39,948.80-59,923.20-21,286.40

Finding the Fourth Proportional to 39,948.80, 59,923.20 and 21,286.40

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Solution

The fourth proportional to 39,948.80, 59,923.20 and 21,286.40 is: 31,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,948.80 : 59,923.20 = 21,286.40 : x
  2. Step 2: Convert to fraction form
    39,948.80/59,923.20 = 21,286.40/x
  3. Step 3: Cross multiply
    39,948.80x = 59,923.20 × 21,286.40
  4. Step 4: Simplify right side
    39,948.80x = 1,275,549,204.48
  5. Step 5: Solve for x
    x = 1,275,549,204.48/39,948.80
  6. Step 6: Final answer
    x = 31,929.60

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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.