Home / 21,776.61-30,053.13-12,217.20

Finding the Fourth Proportional to 21,776.61, 30,053.13 and 12,217.20

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Solution

The fourth proportional to 21,776.61, 30,053.13 and 12,217.20 is: 16,860.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,776.61 : 30,053.13 = 12,217.20 : x
  2. Step 2: Convert to fraction form
    21,776.61/30,053.13 = 12,217.20/x
  3. Step 3: Cross multiply
    21,776.61x = 30,053.13 × 12,217.20
  4. Step 4: Simplify right side
    21,776.61x = 367,165,099.84
  5. Step 5: Solve for x
    x = 367,165,099.84/21,776.61
  6. Step 6: Final answer
    x = 16,860.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.