Home / 21,287.19-29,376.99-11,727.77

Finding the Fourth Proportional to 21,287.19, 29,376.99 and 11,727.77

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Solution

The fourth proportional to 21,287.19, 29,376.99 and 11,727.77 is: 16,184.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,287.19 : 29,376.99 = 11,727.77 : x
  2. Step 2: Convert to fraction form
    21,287.19/29,376.99 = 11,727.77/x
  3. Step 3: Cross multiply
    21,287.19x = 29,376.99 × 11,727.77
  4. Step 4: Simplify right side
    21,287.19x = 344,526,582.01
  5. Step 5: Solve for x
    x = 344,526,582.01/21,287.19
  6. Step 6: Final answer
    x = 16,184.69

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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.