Home / 10,215.59-15,320.61-2,818.26

Finding the Fourth Proportional to 10,215.59, 15,320.61 and 2,818.26

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Solution

The fourth proportional to 10,215.59, 15,320.61 and 2,818.26 is: 4,226.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.59 : 15,320.61 = 2,818.26 : x
  2. Step 2: Convert to fraction form
    10,215.59/15,320.61 = 2,818.26/x
  3. Step 3: Cross multiply
    10,215.59x = 15,320.61 × 2,818.26
  4. Step 4: Simplify right side
    10,215.59x = 43,177,462.34
  5. Step 5: Solve for x
    x = 43,177,462.34/10,215.59
  6. Step 6: Final answer
    x = 4,226.63

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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.