Home / 21,649.36-32,251.88-20,855.76

Finding the Fourth Proportional to 21,649.36, 32,251.88 and 20,855.76

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Solution

The fourth proportional to 21,649.36, 32,251.88 and 20,855.76 is: 31,069.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,649.36 : 32,251.88 = 20,855.76 : x
  2. Step 2: Convert to fraction form
    21,649.36/32,251.88 = 20,855.76/x
  3. Step 3: Cross multiply
    21,649.36x = 32,251.88 × 20,855.76
  4. Step 4: Simplify right side
    21,649.36x = 672,637,468.83
  5. Step 5: Solve for x
    x = 672,637,468.83/21,649.36
  6. Step 6: Final answer
    x = 31,069.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.