Home / 21,766.15-30,026.21-14,216.90

Finding the Fourth Proportional to 21,766.15, 30,026.21 and 14,216.90

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Solution

The fourth proportional to 21,766.15, 30,026.21 and 14,216.90 is: 19,612.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,766.15 : 30,026.21 = 14,216.90 : x
  2. Step 2: Convert to fraction form
    21,766.15/30,026.21 = 14,216.90/x
  3. Step 3: Cross multiply
    21,766.15x = 30,026.21 × 14,216.90
  4. Step 4: Simplify right side
    21,766.15x = 426,879,624.95
  5. Step 5: Solve for x
    x = 426,879,624.95/21,766.15
  6. Step 6: Final answer
    x = 19,612.09

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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.