Home / 15,447.94-21,302.16-13,217.20

Finding the Fourth Proportional to 15,447.94, 21,302.16 and 13,217.20

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Solution

The fourth proportional to 15,447.94, 21,302.16 and 13,217.20 is: 18,226.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.94 : 21,302.16 = 13,217.20 : x
  2. Step 2: Convert to fraction form
    15,447.94/21,302.16 = 13,217.20/x
  3. Step 3: Cross multiply
    15,447.94x = 21,302.16 × 13,217.20
  4. Step 4: Simplify right side
    15,447.94x = 281,554,909.15
  5. Step 5: Solve for x
    x = 281,554,909.15/15,447.94
  6. Step 6: Final answer
    x = 18,226.05

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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.