Home / 21,230.39-29,298.15-11,670.77

Finding the Fourth Proportional to 21,230.39, 29,298.15 and 11,670.77

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Solution

The fourth proportional to 21,230.39, 29,298.15 and 11,670.77 is: 16,105.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.39 : 29,298.15 = 11,670.77 : x
  2. Step 2: Convert to fraction form
    21,230.39/29,298.15 = 11,670.77/x
  3. Step 3: Cross multiply
    21,230.39x = 29,298.15 × 11,670.77
  4. Step 4: Simplify right side
    21,230.39x = 341,931,823.58
  5. Step 5: Solve for x
    x = 341,931,823.58/21,230.39
  6. Step 6: Final answer
    x = 16,105.78

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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.