Home / 10,143.95-15,215.90-2,748.60

Finding the Fourth Proportional to 10,143.95, 15,215.90 and 2,748.60

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Solution

The fourth proportional to 10,143.95, 15,215.90 and 2,748.60 is: 4,122.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.95 : 15,215.90 = 2,748.60 : x
  2. Step 2: Convert to fraction form
    10,143.95/15,215.90 = 2,748.60/x
  3. Step 3: Cross multiply
    10,143.95x = 15,215.90 × 2,748.60
  4. Step 4: Simplify right side
    10,143.95x = 41,822,409.00
  5. Step 5: Solve for x
    x = 41,822,409.00/10,143.95
  6. Step 6: Final answer
    x = 4,122.89

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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.