Home / 21,687.36-32,482.08-13,231.20

Finding the Fourth Proportional to 21,687.36, 32,482.08 and 13,231.20

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Solution

The fourth proportional to 21,687.36, 32,482.08 and 13,231.20 is: 19,816.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,687.36 : 32,482.08 = 13,231.20 : x
  2. Step 2: Convert to fraction form
    21,687.36/32,482.08 = 13,231.20/x
  3. Step 3: Cross multiply
    21,687.36x = 32,482.08 × 13,231.20
  4. Step 4: Simplify right side
    21,687.36x = 429,776,896.90
  5. Step 5: Solve for x
    x = 429,776,896.90/21,687.36
  6. Step 6: Final answer
    x = 19,816.93

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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.