Home / 10,179.66-14,040.06-6,821.40

Finding the Fourth Proportional to 10,179.66, 14,040.06 and 6,821.40

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Solution

The fourth proportional to 10,179.66, 14,040.06 and 6,821.40 is: 9,408.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,179.66 : 14,040.06 = 6,821.40 : x
  2. Step 2: Convert to fraction form
    10,179.66/14,040.06 = 6,821.40/x
  3. Step 3: Cross multiply
    10,179.66x = 14,040.06 × 6,821.40
  4. Step 4: Simplify right side
    10,179.66x = 95,772,865.28
  5. Step 5: Solve for x
    x = 95,772,865.28/10,179.66
  6. Step 6: Final answer
    x = 9,408.26

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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.