Home / 15,445.71-21,299.18-13,214.97

Finding the Fourth Proportional to 15,445.71, 21,299.18 and 13,214.97

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Solution

The fourth proportional to 15,445.71, 21,299.18 and 13,214.97 is: 18,223.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.71 : 21,299.18 = 13,214.97 : x
  2. Step 2: Convert to fraction form
    15,445.71/21,299.18 = 13,214.97/x
  3. Step 3: Cross multiply
    15,445.71x = 21,299.18 × 13,214.97
  4. Step 4: Simplify right side
    15,445.71x = 281,467,958.65
  5. Step 5: Solve for x
    x = 281,467,958.65/15,445.71
  6. Step 6: Final answer
    x = 18,223.05

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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.