Home / 21,570.20-32,336.10-12,795.80

Finding the Fourth Proportional to 21,570.20, 32,336.10 and 12,795.80

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Solution

The fourth proportional to 21,570.20, 32,336.10 and 12,795.80 is: 19,182.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,570.20 : 32,336.10 = 12,795.80 : x
  2. Step 2: Convert to fraction form
    21,570.20/32,336.10 = 12,795.80/x
  3. Step 3: Cross multiply
    21,570.20x = 32,336.10 × 12,795.80
  4. Step 4: Simplify right side
    21,570.20x = 413,766,268.38
  5. Step 5: Solve for x
    x = 413,766,268.38/21,570.20
  6. Step 6: Final answer
    x = 19,182.31

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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.