Home / 13,392.80-18,476.22-9,416.48

Finding the Fourth Proportional to 13,392.80, 18,476.22 and 9,416.48

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Solution

The fourth proportional to 13,392.80, 18,476.22 and 9,416.48 is: 12,990.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,392.80 : 18,476.22 = 9,416.48 : x
  2. Step 2: Convert to fraction form
    13,392.80/18,476.22 = 9,416.48/x
  3. Step 3: Cross multiply
    13,392.80x = 18,476.22 × 9,416.48
  4. Step 4: Simplify right side
    13,392.80x = 173,980,956.11
  5. Step 5: Solve for x
    x = 173,980,956.11/13,392.80
  6. Step 6: Final answer
    x = 12,990.63

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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.