Home / 10,128.57-15,186.26-4,203.82

Finding the Fourth Proportional to 10,128.57, 15,186.26 and 4,203.82

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Solution

The fourth proportional to 10,128.57, 15,186.26 and 4,203.82 is: 6,302.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.57 : 15,186.26 = 4,203.82 : x
  2. Step 2: Convert to fraction form
    10,128.57/15,186.26 = 4,203.82/x
  3. Step 3: Cross multiply
    10,128.57x = 15,186.26 × 4,203.82
  4. Step 4: Simplify right side
    10,128.57x = 63,840,282.49
  5. Step 5: Solve for x
    x = 63,840,282.49/10,128.57
  6. Step 6: Final answer
    x = 6,302.99

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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.