Home / 21,226.31-31,795.71-12,434.57

Finding the Fourth Proportional to 21,226.31, 31,795.71 and 12,434.57

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Solution

The fourth proportional to 21,226.31, 31,795.71 and 12,434.57 is: 18,626.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.31 : 31,795.71 = 12,434.57 : x
  2. Step 2: Convert to fraction form
    21,226.31/31,795.71 = 12,434.57/x
  3. Step 3: Cross multiply
    21,226.31x = 31,795.71 × 12,434.57
  4. Step 4: Simplify right side
    21,226.31x = 395,365,981.69
  5. Step 5: Solve for x
    x = 395,365,981.69/21,226.31
  6. Step 6: Final answer
    x = 18,626.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.