Home / 39,987.54-59,975.73-21,981.42

Finding the Fourth Proportional to 39,987.54, 59,975.73 and 21,981.42

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Solution

The fourth proportional to 39,987.54, 59,975.73 and 21,981.42 is: 32,969.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,987.54 : 59,975.73 = 21,981.42 : x
  2. Step 2: Convert to fraction form
    39,987.54/59,975.73 = 21,981.42/x
  3. Step 3: Cross multiply
    39,987.54x = 59,975.73 × 21,981.42
  4. Step 4: Simplify right side
    39,987.54x = 1,318,351,710.94
  5. Step 5: Solve for x
    x = 1,318,351,710.94/39,987.54
  6. Step 6: Final answer
    x = 32,969.06

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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.