Home / 21,927.80-32,891.70-12,564.20

Finding the Fourth Proportional to 21,927.80, 32,891.70 and 12,564.20

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Solution

The fourth proportional to 21,927.80, 32,891.70 and 12,564.20 is: 18,846.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,927.80 : 32,891.70 = 12,564.20 : x
  2. Step 2: Convert to fraction form
    21,927.80/32,891.70 = 12,564.20/x
  3. Step 3: Cross multiply
    21,927.80x = 32,891.70 × 12,564.20
  4. Step 4: Simplify right side
    21,927.80x = 413,257,897.14
  5. Step 5: Solve for x
    x = 413,257,897.14/21,927.80
  6. Step 6: Final answer
    x = 18,846.30

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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.