Home / 21,684.28-32,531.84-10,005.72

Finding the Fourth Proportional to 21,684.28, 32,531.84 and 10,005.72

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Solution

The fourth proportional to 21,684.28, 32,531.84 and 10,005.72 is: 15,011.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,684.28 : 32,531.84 = 10,005.72 : x
  2. Step 2: Convert to fraction form
    21,684.28/32,531.84 = 10,005.72/x
  3. Step 3: Cross multiply
    21,684.28x = 32,531.84 × 10,005.72
  4. Step 4: Simplify right side
    21,684.28x = 325,504,482.12
  5. Step 5: Solve for x
    x = 325,504,482.12/21,684.28
  6. Step 6: Final answer
    x = 15,011.08

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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.