Home / 19,561.20-29,327.40-8,458.80

Finding the Fourth Proportional to 19,561.20, 29,327.40 and 8,458.80

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Solution

The fourth proportional to 19,561.20, 29,327.40 and 8,458.80 is: 12,681.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,561.20 : 29,327.40 = 8,458.80 : x
  2. Step 2: Convert to fraction form
    19,561.20/29,327.40 = 8,458.80/x
  3. Step 3: Cross multiply
    19,561.20x = 29,327.40 × 8,458.80
  4. Step 4: Simplify right side
    19,561.20x = 248,074,611.12
  5. Step 5: Solve for x
    x = 248,074,611.12/19,561.20
  6. Step 6: Final answer
    x = 12,681.97

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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.