Home / 10,138.02-13,982.40-6,357.78

Finding the Fourth Proportional to 10,138.02, 13,982.40 and 6,357.78

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Solution

The fourth proportional to 10,138.02, 13,982.40 and 6,357.78 is: 8,768.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.02 : 13,982.40 = 6,357.78 : x
  2. Step 2: Convert to fraction form
    10,138.02/13,982.40 = 6,357.78/x
  3. Step 3: Cross multiply
    10,138.02x = 13,982.40 × 6,357.78
  4. Step 4: Simplify right side
    10,138.02x = 88,897,023.07
  5. Step 5: Solve for x
    x = 88,897,023.07/10,138.02
  6. Step 6: Final answer
    x = 8,768.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.