Home / 13,416.93-18,515.52-7,449.03

Finding the Fourth Proportional to 13,416.93, 18,515.52 and 7,449.03

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Solution

The fourth proportional to 13,416.93, 18,515.52 and 7,449.03 is: 10,279.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.93 : 18,515.52 = 7,449.03 : x
  2. Step 2: Convert to fraction form
    13,416.93/18,515.52 = 7,449.03/x
  3. Step 3: Cross multiply
    13,416.93x = 18,515.52 × 7,449.03
  4. Step 4: Simplify right side
    13,416.93x = 137,922,663.95
  5. Step 5: Solve for x
    x = 137,922,663.95/13,416.93
  6. Step 6: Final answer
    x = 10,279.75

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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.