Home / 21,954.36-32,931.56-10,275.78

Finding the Fourth Proportional to 21,954.36, 32,931.56 and 10,275.78

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Solution

The fourth proportional to 21,954.36, 32,931.56 and 10,275.78 is: 15,413.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,954.36 : 32,931.56 = 10,275.78 : x
  2. Step 2: Convert to fraction form
    21,954.36/32,931.56 = 10,275.78/x
  3. Step 3: Cross multiply
    21,954.36x = 32,931.56 × 10,275.78
  4. Step 4: Simplify right side
    21,954.36x = 338,397,491.31
  5. Step 5: Solve for x
    x = 338,397,491.31/21,954.36
  6. Step 6: Final answer
    x = 15,413.68

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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.