Home / 10,266.30-15,399.45-8,538.30

Finding the Fourth Proportional to 10,266.30, 15,399.45 and 8,538.30

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Solution

The fourth proportional to 10,266.30, 15,399.45 and 8,538.30 is: 12,807.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,266.30 : 15,399.45 = 8,538.30 : x
  2. Step 2: Convert to fraction form
    10,266.30/15,399.45 = 8,538.30/x
  3. Step 3: Cross multiply
    10,266.30x = 15,399.45 × 8,538.30
  4. Step 4: Simplify right side
    10,266.30x = 131,485,123.94
  5. Step 5: Solve for x
    x = 131,485,123.94/10,266.30
  6. Step 6: Final answer
    x = 12,807.45

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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.