Home / 11,403.80-15,737.25-6,688.10

Finding the Fourth Proportional to 11,403.80, 15,737.25 and 6,688.10

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Solution

The fourth proportional to 11,403.80, 15,737.25 and 6,688.10 is: 9,229.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,403.80 : 15,737.25 = 6,688.10 : x
  2. Step 2: Convert to fraction form
    11,403.80/15,737.25 = 6,688.10/x
  3. Step 3: Cross multiply
    11,403.80x = 15,737.25 × 6,688.10
  4. Step 4: Simplify right side
    11,403.80x = 105,252,301.73
  5. Step 5: Solve for x
    x = 105,252,301.73/11,403.80
  6. Step 6: Final answer
    x = 9,229.58

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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.