Home / 13,384.48-18,470.30-7,416.20

Finding the Fourth Proportional to 13,384.48, 18,470.30 and 7,416.20

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Solution

The fourth proportional to 13,384.48, 18,470.30 and 7,416.20 is: 10,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.48 : 18,470.30 = 7,416.20 : x
  2. Step 2: Convert to fraction form
    13,384.48/18,470.30 = 7,416.20/x
  3. Step 3: Cross multiply
    13,384.48x = 18,470.30 × 7,416.20
  4. Step 4: Simplify right side
    13,384.48x = 136,979,365.05
  5. Step 5: Solve for x
    x = 136,979,365.05/13,384.48
  6. Step 6: Final answer
    x = 10,234.20

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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.