Home / 21,931.86-32,910.33-9,280.62

Finding the Fourth Proportional to 21,931.86, 32,910.33 and 9,280.62

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Solution

The fourth proportional to 21,931.86, 32,910.33 and 9,280.62 is: 13,926.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,931.86 : 32,910.33 = 9,280.62 : x
  2. Step 2: Convert to fraction form
    21,931.86/32,910.33 = 9,280.62/x
  3. Step 3: Cross multiply
    21,931.86x = 32,910.33 × 9,280.62
  4. Step 4: Simplify right side
    21,931.86x = 305,428,266.80
  5. Step 5: Solve for x
    x = 305,428,266.80/21,931.86
  6. Step 6: Final answer
    x = 13,926.24

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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.