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Finding the Fourth Proportional to 10,155.95, 14,015.17 and 5,679.68

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Solution

The fourth proportional to 10,155.95, 14,015.17 and 5,679.68 is: 7,837.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,155.95 : 14,015.17 = 5,679.68 : x
  2. Step 2: Convert to fraction form
    10,155.95/14,015.17 = 5,679.68/x
  3. Step 3: Cross multiply
    10,155.95x = 14,015.17 × 5,679.68
  4. Step 4: Simplify right side
    10,155.95x = 79,601,701.58
  5. Step 5: Solve for x
    x = 79,601,701.58/10,155.95
  6. Step 6: Final answer
    x = 7,837.94

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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.