Home / 13,416.85-18,515.73-7,448.61

Finding the Fourth Proportional to 13,416.85, 18,515.73 and 7,448.61

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Solution

The fourth proportional to 13,416.85, 18,515.73 and 7,448.61 is: 10,279.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.85 : 18,515.73 = 7,448.61 : x
  2. Step 2: Convert to fraction form
    13,416.85/18,515.73 = 7,448.61/x
  3. Step 3: Cross multiply
    13,416.85x = 18,515.73 × 7,448.61
  4. Step 4: Simplify right side
    13,416.85x = 137,916,451.64
  5. Step 5: Solve for x
    x = 137,916,451.64/13,416.85
  6. Step 6: Final answer
    x = 10,279.35

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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.