Home / 15,142.24-20,890.20-9,550

Finding the Fourth Proportional to 15,142.24, 20,890.20 and 9,550

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Solution

The fourth proportional to 15,142.24, 20,890.20 and 9,550 is: 13,175.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,142.24 : 20,890.20 = 9,550 : x
  2. Step 2: Convert to fraction form
    15,142.24/20,890.20 = 9,550/x
  3. Step 3: Cross multiply
    15,142.24x = 20,890.20 × 9,550
  4. Step 4: Simplify right side
    15,142.24x = 199,501,410
  5. Step 5: Solve for x
    x = 199,501,410/15,142.24
  6. Step 6: Final answer
    x = 13,175.16

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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.