Home / 13,416.60-18,515.12-7,448.66

Finding the Fourth Proportional to 13,416.60, 18,515.12 and 7,448.66

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Solution

The fourth proportional to 13,416.60, 18,515.12 and 7,448.66 is: 10,279.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.60 : 18,515.12 = 7,448.66 : x
  2. Step 2: Convert to fraction form
    13,416.60/18,515.12 = 7,448.66/x
  3. Step 3: Cross multiply
    13,416.60x = 18,515.12 × 7,448.66
  4. Step 4: Simplify right side
    13,416.60x = 137,912,833.74
  5. Step 5: Solve for x
    x = 137,912,833.74/13,416.60
  6. Step 6: Final answer
    x = 10,279.27

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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.