Home / 15,475.05-21,366.36-13,668.75

Finding the Fourth Proportional to 15,475.05, 21,366.36 and 13,668.75

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Solution

The fourth proportional to 15,475.05, 21,366.36 and 13,668.75 is: 18,872.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475.05 : 21,366.36 = 13,668.75 : x
  2. Step 2: Convert to fraction form
    15,475.05/21,366.36 = 13,668.75/x
  3. Step 3: Cross multiply
    15,475.05x = 21,366.36 × 13,668.75
  4. Step 4: Simplify right side
    15,475.05x = 292,051,433.25
  5. Step 5: Solve for x
    x = 292,051,433.25/15,475.05
  6. Step 6: Final answer
    x = 18,872.41

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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.