Home / 13,521.11-20,276.18-5,618.25

Finding the Fourth Proportional to 13,521.11, 20,276.18 and 5,618.25

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Solution

The fourth proportional to 13,521.11, 20,276.18 and 5,618.25 is: 8,425.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.11 : 20,276.18 = 5,618.25 : x
  2. Step 2: Convert to fraction form
    13,521.11/20,276.18 = 5,618.25/x
  3. Step 3: Cross multiply
    13,521.11x = 20,276.18 × 5,618.25
  4. Step 4: Simplify right side
    13,521.11x = 113,916,641.26
  5. Step 5: Solve for x
    x = 113,916,641.26/13,521.11
  6. Step 6: Final answer
    x = 8,425.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.