Home / 15,120.57-20,857.27-9,741.23

Finding the Fourth Proportional to 15,120.57, 20,857.27 and 9,741.23

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Solution

The fourth proportional to 15,120.57, 20,857.27 and 9,741.23 is: 13,437.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,120.57 : 20,857.27 = 9,741.23 : x
  2. Step 2: Convert to fraction form
    15,120.57/20,857.27 = 9,741.23/x
  3. Step 3: Cross multiply
    15,120.57x = 20,857.27 × 9,741.23
  4. Step 4: Simplify right side
    15,120.57x = 203,175,464.24
  5. Step 5: Solve for x
    x = 203,175,464.24/15,120.57
  6. Step 6: Final answer
    x = 13,437.02

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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.