Home / 21,187.22-29,252.12-14,470.38

Finding the Fourth Proportional to 21,187.22, 29,252.12 and 14,470.38

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Solution

The fourth proportional to 21,187.22, 29,252.12 and 14,470.38 is: 19,978.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.22 : 29,252.12 = 14,470.38 : x
  2. Step 2: Convert to fraction form
    21,187.22/29,252.12 = 14,470.38/x
  3. Step 3: Cross multiply
    21,187.22x = 29,252.12 × 14,470.38
  4. Step 4: Simplify right side
    21,187.22x = 423,289,219.85
  5. Step 5: Solve for x
    x = 423,289,219.85/21,187.22
  6. Step 6: Final answer
    x = 19,978.52

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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.