Home / 10,606.20-15,909.30-5,422.20

Finding the Fourth Proportional to 10,606.20, 15,909.30 and 5,422.20

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Solution

The fourth proportional to 10,606.20, 15,909.30 and 5,422.20 is: 8,133.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,606.20 : 15,909.30 = 5,422.20 : x
  2. Step 2: Convert to fraction form
    10,606.20/15,909.30 = 5,422.20/x
  3. Step 3: Cross multiply
    10,606.20x = 15,909.30 × 5,422.20
  4. Step 4: Simplify right side
    10,606.20x = 86,263,406.46
  5. Step 5: Solve for x
    x = 86,263,406.46/10,606.20
  6. Step 6: Final answer
    x = 8,133.30

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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.