Home / 21,093.65-29,110.51-12,140.95

Finding the Fourth Proportional to 21,093.65, 29,110.51 and 12,140.95

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Solution

The fourth proportional to 21,093.65, 29,110.51 and 12,140.95 is: 16,755.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,093.65 : 29,110.51 = 12,140.95 : x
  2. Step 2: Convert to fraction form
    21,093.65/29,110.51 = 12,140.95/x
  3. Step 3: Cross multiply
    21,093.65x = 29,110.51 × 12,140.95
  4. Step 4: Simplify right side
    21,093.65x = 353,429,246.38
  5. Step 5: Solve for x
    x = 353,429,246.38/21,093.65
  6. Step 6: Final answer
    x = 16,755.24

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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.