Home / 21,377.52-29,509.20-19,135.44

Finding the Fourth Proportional to 21,377.52, 29,509.20 and 19,135.44

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Solution

The fourth proportional to 21,377.52, 29,509.20 and 19,135.44 is: 26,414.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,377.52 : 29,509.20 = 19,135.44 : x
  2. Step 2: Convert to fraction form
    21,377.52/29,509.20 = 19,135.44/x
  3. Step 3: Cross multiply
    21,377.52x = 29,509.20 × 19,135.44
  4. Step 4: Simplify right side
    21,377.52x = 564,671,526.05
  5. Step 5: Solve for x
    x = 564,671,526.05/21,377.52
  6. Step 6: Final answer
    x = 26,414.27

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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.