Home / 21,088.41-29,101.17-11,656.77

Finding the Fourth Proportional to 21,088.41, 29,101.17 and 11,656.77

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Solution

The fourth proportional to 21,088.41, 29,101.17 and 11,656.77 is: 16,085.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.41 : 29,101.17 = 11,656.77 : x
  2. Step 2: Convert to fraction form
    21,088.41/29,101.17 = 11,656.77/x
  3. Step 3: Cross multiply
    21,088.41x = 29,101.17 × 11,656.77
  4. Step 4: Simplify right side
    21,088.41x = 339,225,645.42
  5. Step 5: Solve for x
    x = 339,225,645.42/21,088.41
  6. Step 6: Final answer
    x = 16,085.88

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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.