Home / 13,416.93-18,515.12-7,448.31

Finding the Fourth Proportional to 13,416.93, 18,515.12 and 7,448.31

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Solution

The fourth proportional to 13,416.93, 18,515.12 and 7,448.31 is: 10,278.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.93 : 18,515.12 = 7,448.31 : x
  2. Step 2: Convert to fraction form
    13,416.93/18,515.12 = 7,448.31/x
  3. Step 3: Cross multiply
    13,416.93x = 18,515.12 × 7,448.31
  4. Step 4: Simplify right side
    13,416.93x = 137,906,316.21
  5. Step 5: Solve for x
    x = 137,906,316.21/13,416.93
  6. Step 6: Final answer
    x = 10,278.53

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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.