Home / 22,721.25-31,355.34-12,785.25

Finding the Fourth Proportional to 22,721.25, 31,355.34 and 12,785.25

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Solution

The fourth proportional to 22,721.25, 31,355.34 and 12,785.25 is: 17,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.25 : 31,355.34 = 12,785.25 : x
  2. Step 2: Convert to fraction form
    22,721.25/31,355.34 = 12,785.25/x
  3. Step 3: Cross multiply
    22,721.25x = 31,355.34 × 12,785.25
  4. Step 4: Simplify right side
    22,721.25x = 400,885,860.74
  5. Step 5: Solve for x
    x = 400,885,860.74/22,721.25
  6. Step 6: Final answer
    x = 17,643.65

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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.