Home / 10,143.12-15,214.64-3,218.16

Finding the Fourth Proportional to 10,143.12, 15,214.64 and 3,218.16

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Solution

The fourth proportional to 10,143.12, 15,214.64 and 3,218.16 is: 4,827.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.12 : 15,214.64 = 3,218.16 : x
  2. Step 2: Convert to fraction form
    10,143.12/15,214.64 = 3,218.16/x
  3. Step 3: Cross multiply
    10,143.12x = 15,214.64 × 3,218.16
  4. Step 4: Simplify right side
    10,143.12x = 48,963,145.86
  5. Step 5: Solve for x
    x = 48,963,145.86/10,143.12
  6. Step 6: Final answer
    x = 4,827.23

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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.