Home / 10,215.96-15,298.02-8,159.64

Finding the Fourth Proportional to 10,215.96, 15,298.02 and 8,159.64

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Solution

The fourth proportional to 10,215.96, 15,298.02 and 8,159.64 is: 12,218.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.96 : 15,298.02 = 8,159.64 : x
  2. Step 2: Convert to fraction form
    10,215.96/15,298.02 = 8,159.64/x
  3. Step 3: Cross multiply
    10,215.96x = 15,298.02 × 8,159.64
  4. Step 4: Simplify right side
    10,215.96x = 124,826,335.91
  5. Step 5: Solve for x
    x = 124,826,335.91/10,215.96
  6. Step 6: Final answer
    x = 12,218.76

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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.