Home / 13,384.35-18,470.77-7,416.68

Finding the Fourth Proportional to 13,384.35, 18,470.77 and 7,416.68

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Solution

The fourth proportional to 13,384.35, 18,470.77 and 7,416.68 is: 10,235.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.35 : 18,470.77 = 7,416.68 : x
  2. Step 2: Convert to fraction form
    13,384.35/18,470.77 = 7,416.68/x
  3. Step 3: Cross multiply
    13,384.35x = 18,470.77 × 7,416.68
  4. Step 4: Simplify right side
    13,384.35x = 136,991,679.55
  5. Step 5: Solve for x
    x = 136,991,679.55/13,384.35
  6. Step 6: Final answer
    x = 10,235.21

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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.