Home / 21,776.97-30,050.40-12,215.53

Finding the Fourth Proportional to 21,776.97, 30,050.40 and 12,215.53

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Solution

The fourth proportional to 21,776.97, 30,050.40 and 12,215.53 is: 16,856.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,776.97 : 30,050.40 = 12,215.53 : x
  2. Step 2: Convert to fraction form
    21,776.97/30,050.40 = 12,215.53/x
  3. Step 3: Cross multiply
    21,776.97x = 30,050.40 × 12,215.53
  4. Step 4: Simplify right side
    21,776.97x = 367,081,562.71
  5. Step 5: Solve for x
    x = 367,081,562.71/21,776.97
  6. Step 6: Final answer
    x = 16,856.41

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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.