Home / 13,381.71-18,473.18-9,406.23

Finding the Fourth Proportional to 13,381.71, 18,473.18 and 9,406.23

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Solution

The fourth proportional to 13,381.71, 18,473.18 and 9,406.23 is: 12,985.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.71 : 18,473.18 = 9,406.23 : x
  2. Step 2: Convert to fraction form
    13,381.71/18,473.18 = 9,406.23/x
  3. Step 3: Cross multiply
    13,381.71x = 18,473.18 × 9,406.23
  4. Step 4: Simplify right side
    13,381.71x = 173,762,932.88
  5. Step 5: Solve for x
    x = 173,762,932.88/13,381.71
  6. Step 6: Final answer
    x = 12,985.11

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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.