Home / 13,207.99-18,224.71-7,540.15

Finding the Fourth Proportional to 13,207.99, 18,224.71 and 7,540.15

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Solution

The fourth proportional to 13,207.99, 18,224.71 and 7,540.15 is: 10,404.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.99 : 18,224.71 = 7,540.15 : x
  2. Step 2: Convert to fraction form
    13,207.99/18,224.71 = 7,540.15/x
  3. Step 3: Cross multiply
    13,207.99x = 18,224.71 × 7,540.15
  4. Step 4: Simplify right side
    13,207.99x = 137,417,047.11
  5. Step 5: Solve for x
    x = 137,417,047.11/13,207.99
  6. Step 6: Final answer
    x = 10,404.08

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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.