Home / 10,155.41-14,012.66-5,679.20

Finding the Fourth Proportional to 10,155.41, 14,012.66 and 5,679.20

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Solution

The fourth proportional to 10,155.41, 14,012.66 and 5,679.20 is: 7,836.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,155.41 : 14,012.66 = 5,679.20 : x
  2. Step 2: Convert to fraction form
    10,155.41/14,012.66 = 5,679.20/x
  3. Step 3: Cross multiply
    10,155.41x = 14,012.66 × 5,679.20
  4. Step 4: Simplify right side
    10,155.41x = 79,580,600.21
  5. Step 5: Solve for x
    x = 79,580,600.21/10,155.41
  6. Step 6: Final answer
    x = 7,836.28

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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.