Home / 22,706.81-31,322.45-13,629.76

Finding the Fourth Proportional to 22,706.81, 31,322.45 and 13,629.76

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Solution

The fourth proportional to 22,706.81, 31,322.45 and 13,629.76 is: 18,801.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,706.81 : 31,322.45 = 13,629.76 : x
  2. Step 2: Convert to fraction form
    22,706.81/31,322.45 = 13,629.76/x
  3. Step 3: Cross multiply
    22,706.81x = 31,322.45 × 13,629.76
  4. Step 4: Simplify right side
    22,706.81x = 426,917,251.35
  5. Step 5: Solve for x
    x = 426,917,251.35/22,706.81
  6. Step 6: Final answer
    x = 18,801.29

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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.