Home / 10,156.20-14,015.46-5,679.90

Finding the Fourth Proportional to 10,156.20, 14,015.46 and 5,679.90

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Solution

The fourth proportional to 10,156.20, 14,015.46 and 5,679.90 is: 7,838.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,156.20 : 14,015.46 = 5,679.90 : x
  2. Step 2: Convert to fraction form
    10,156.20/14,015.46 = 5,679.90/x
  3. Step 3: Cross multiply
    10,156.20x = 14,015.46 × 5,679.90
  4. Step 4: Simplify right side
    10,156.20x = 79,606,411.25
  5. Step 5: Solve for x
    x = 79,606,411.25/10,156.20
  6. Step 6: Final answer
    x = 7,838.21

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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.