Home / 21,275.12-32,071.96-19,847.90

Finding the Fourth Proportional to 21,275.12, 32,071.96 and 19,847.90

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Solution

The fourth proportional to 21,275.12, 32,071.96 and 19,847.90 is: 29,920.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.12 : 32,071.96 = 19,847.90 : x
  2. Step 2: Convert to fraction form
    21,275.12/32,071.96 = 19,847.90/x
  3. Step 3: Cross multiply
    21,275.12x = 32,071.96 × 19,847.90
  4. Step 4: Simplify right side
    21,275.12x = 636,561,054.88
  5. Step 5: Solve for x
    x = 636,561,054.88/21,275.12
  6. Step 6: Final answer
    x = 29,920.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.