Home / 10,140.48-15,212.80-3,900.48

Finding the Fourth Proportional to 10,140.48, 15,212.80 and 3,900.48

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Solution

The fourth proportional to 10,140.48, 15,212.80 and 3,900.48 is: 5,851.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.48 : 15,212.80 = 3,900.48 : x
  2. Step 2: Convert to fraction form
    10,140.48/15,212.80 = 3,900.48/x
  3. Step 3: Cross multiply
    10,140.48x = 15,212.80 × 3,900.48
  4. Step 4: Simplify right side
    10,140.48x = 59,337,222.14
  5. Step 5: Solve for x
    x = 59,337,222.14/10,140.48
  6. Step 6: Final answer
    x = 5,851.52

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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.