Home / 10,142.10-15,210.45-3,122.10

Finding the Fourth Proportional to 10,142.10, 15,210.45 and 3,122.10

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Solution

The fourth proportional to 10,142.10, 15,210.45 and 3,122.10 is: 4,682.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,142.10 : 15,210.45 = 3,122.10 : x
  2. Step 2: Convert to fraction form
    10,142.10/15,210.45 = 3,122.10/x
  3. Step 3: Cross multiply
    10,142.10x = 15,210.45 × 3,122.10
  4. Step 4: Simplify right side
    10,142.10x = 47,488,545.95
  5. Step 5: Solve for x
    x = 47,488,545.95/10,142.10
  6. Step 6: Final answer
    x = 4,682.32

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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.