Home / 15,505.11-21,389.54-9,213.03

Finding the Fourth Proportional to 15,505.11, 21,389.54 and 9,213.03

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Solution

The fourth proportional to 15,505.11, 21,389.54 and 9,213.03 is: 12,709.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,505.11 : 21,389.54 = 9,213.03 : x
  2. Step 2: Convert to fraction form
    15,505.11/21,389.54 = 9,213.03/x
  3. Step 3: Cross multiply
    15,505.11x = 21,389.54 × 9,213.03
  4. Step 4: Simplify right side
    15,505.11x = 197,062,427.64
  5. Step 5: Solve for x
    x = 197,062,427.64/15,505.11
  6. Step 6: Final answer
    x = 12,709.51

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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.