Home / 21,115.70-29,137.68-14,295.85

Finding the Fourth Proportional to 21,115.70, 29,137.68 and 14,295.85

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Solution

The fourth proportional to 21,115.70, 29,137.68 and 14,295.85 is: 19,726.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,115.70 : 29,137.68 = 14,295.85 : x
  2. Step 2: Convert to fraction form
    21,115.70/29,137.68 = 14,295.85/x
  3. Step 3: Cross multiply
    21,115.70x = 29,137.68 × 14,295.85
  4. Step 4: Simplify right side
    21,115.70x = 416,547,685.46
  5. Step 5: Solve for x
    x = 416,547,685.46/21,115.70
  6. Step 6: Final answer
    x = 19,726.92

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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.