Home / 21,176.91-29,227.64-11,748.51

Finding the Fourth Proportional to 21,176.91, 29,227.64 and 11,748.51

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Solution

The fourth proportional to 21,176.91, 29,227.64 and 11,748.51 is: 16,214.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.91 : 29,227.64 = 11,748.51 : x
  2. Step 2: Convert to fraction form
    21,176.91/29,227.64 = 11,748.51/x
  3. Step 3: Cross multiply
    21,176.91x = 29,227.64 × 11,748.51
  4. Step 4: Simplify right side
    21,176.91x = 343,381,162.07
  5. Step 5: Solve for x
    x = 343,381,162.07/21,176.91
  6. Step 6: Final answer
    x = 16,214.89

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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.