Home / 21,987.84-32,974.08-13,224.32

Finding the Fourth Proportional to 21,987.84, 32,974.08 and 13,224.32

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Solution

The fourth proportional to 21,987.84, 32,974.08 and 13,224.32 is: 19,831.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,987.84 : 32,974.08 = 13,224.32 : x
  2. Step 2: Convert to fraction form
    21,987.84/32,974.08 = 13,224.32/x
  3. Step 3: Cross multiply
    21,987.84x = 32,974.08 × 13,224.32
  4. Step 4: Simplify right side
    21,987.84x = 436,059,785.63
  5. Step 5: Solve for x
    x = 436,059,785.63/21,987.84
  6. Step 6: Final answer
    x = 19,831.86

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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.