Home / 22,789.18-31,449-12,717.51

Finding the Fourth Proportional to 22,789.18, 31,449 and 12,717.51

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Solution

The fourth proportional to 22,789.18, 31,449 and 12,717.51 is: 17,550.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,789.18 : 31,449 = 12,717.51 : x
  2. Step 2: Convert to fraction form
    22,789.18/31,449 = 12,717.51/x
  3. Step 3: Cross multiply
    22,789.18x = 31,449 × 12,717.51
  4. Step 4: Simplify right side
    22,789.18x = 399,952,971.99
  5. Step 5: Solve for x
    x = 399,952,971.99/22,789.18
  6. Step 6: Final answer
    x = 17,550.13

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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.