Home / 21,088.46-29,100.12-11,656.82

Finding the Fourth Proportional to 21,088.46, 29,100.12 and 11,656.82

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Solution

The fourth proportional to 21,088.46, 29,100.12 and 11,656.82 is: 16,085.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.46 : 29,100.12 = 11,656.82 : x
  2. Step 2: Convert to fraction form
    21,088.46/29,100.12 = 11,656.82/x
  3. Step 3: Cross multiply
    21,088.46x = 29,100.12 × 11,656.82
  4. Step 4: Simplify right side
    21,088.46x = 339,214,860.82
  5. Step 5: Solve for x
    x = 339,214,860.82/21,088.46
  6. Step 6: Final answer
    x = 16,085.33

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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.