Home / 10,220.15-14,108.91-6,688.76

Finding the Fourth Proportional to 10,220.15, 14,108.91 and 6,688.76

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Solution

The fourth proportional to 10,220.15, 14,108.91 and 6,688.76 is: 9,233.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.15 : 14,108.91 = 6,688.76 : x
  2. Step 2: Convert to fraction form
    10,220.15/14,108.91 = 6,688.76/x
  3. Step 3: Cross multiply
    10,220.15x = 14,108.91 × 6,688.76
  4. Step 4: Simplify right side
    10,220.15x = 94,371,112.85
  5. Step 5: Solve for x
    x = 94,371,112.85/10,220.15
  6. Step 6: Final answer
    x = 9,233.83

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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.