Home / 10,895.35-15,036.60-6,420.49

Finding the Fourth Proportional to 10,895.35, 15,036.60 and 6,420.49

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Solution

The fourth proportional to 10,895.35, 15,036.60 and 6,420.49 is: 8,860.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,895.35 : 15,036.60 = 6,420.49 : x
  2. Step 2: Convert to fraction form
    10,895.35/15,036.60 = 6,420.49/x
  3. Step 3: Cross multiply
    10,895.35x = 15,036.60 × 6,420.49
  4. Step 4: Simplify right side
    10,895.35x = 96,542,339.93
  5. Step 5: Solve for x
    x = 96,542,339.93/10,895.35
  6. Step 6: Final answer
    x = 8,860.88

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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.