Home / 10,900.12-15,042.66-6,424.06

Finding the Fourth Proportional to 10,900.12, 15,042.66 and 6,424.06

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Solution

The fourth proportional to 10,900.12, 15,042.66 and 6,424.06 is: 8,865.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.12 : 15,042.66 = 6,424.06 : x
  2. Step 2: Convert to fraction form
    10,900.12/15,042.66 = 6,424.06/x
  3. Step 3: Cross multiply
    10,900.12x = 15,042.66 × 6,424.06
  4. Step 4: Simplify right side
    10,900.12x = 96,634,912.79
  5. Step 5: Solve for x
    x = 96,634,912.79/10,900.12
  6. Step 6: Final answer
    x = 8,865.49

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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.