Home / 21,790.88-32,682.40-9,317.92

Finding the Fourth Proportional to 21,790.88, 32,682.40 and 9,317.92

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Solution

The fourth proportional to 21,790.88, 32,682.40 and 9,317.92 is: 13,975.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790.88 : 32,682.40 = 9,317.92 : x
  2. Step 2: Convert to fraction form
    21,790.88/32,682.40 = 9,317.92/x
  3. Step 3: Cross multiply
    21,790.88x = 32,682.40 × 9,317.92
  4. Step 4: Simplify right side
    21,790.88x = 304,531,988.61
  5. Step 5: Solve for x
    x = 304,531,988.61/21,790.88
  6. Step 6: Final answer
    x = 13,975.20

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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.