Home / 22,396.81-30,908.88-12,838.29

Finding the Fourth Proportional to 22,396.81, 30,908.88 and 12,838.29

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Solution

The fourth proportional to 22,396.81, 30,908.88 and 12,838.29 is: 17,717.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,396.81 : 30,908.88 = 12,838.29 : x
  2. Step 2: Convert to fraction form
    22,396.81/30,908.88 = 12,838.29/x
  3. Step 3: Cross multiply
    22,396.81x = 30,908.88 × 12,838.29
  4. Step 4: Simplify right side
    22,396.81x = 396,817,165.02
  5. Step 5: Solve for x
    x = 396,817,165.02/22,396.81
  6. Step 6: Final answer
    x = 17,717.58

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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.