Home / 10,300.30-15,449.38-6,989.80

Finding the Fourth Proportional to 10,300.30, 15,449.38 and 6,989.80

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Solution

The fourth proportional to 10,300.30, 15,449.38 and 6,989.80 is: 10,483.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,300.30 : 15,449.38 = 6,989.80 : x
  2. Step 2: Convert to fraction form
    10,300.30/15,449.38 = 6,989.80/x
  3. Step 3: Cross multiply
    10,300.30x = 15,449.38 × 6,989.80
  4. Step 4: Simplify right side
    10,300.30x = 107,988,076.32
  5. Step 5: Solve for x
    x = 107,988,076.32/10,300.30
  6. Step 6: Final answer
    x = 10,483.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.