Home / 13,521.65-20,261.57-10,553.06

Finding the Fourth Proportional to 13,521.65, 20,261.57 and 10,553.06

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Solution

The fourth proportional to 13,521.65, 20,261.57 and 10,553.06 is: 15,813.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.65 : 20,261.57 = 10,553.06 : x
  2. Step 2: Convert to fraction form
    13,521.65/20,261.57 = 10,553.06/x
  3. Step 3: Cross multiply
    13,521.65x = 20,261.57 × 10,553.06
  4. Step 4: Simplify right side
    13,521.65x = 213,821,462.60
  5. Step 5: Solve for x
    x = 213,821,462.60/13,521.65
  6. Step 6: Final answer
    x = 15,813.27

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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.