Home / 11,475.72-15,836.76-6,439.68

Finding the Fourth Proportional to 11,475.72, 15,836.76 and 6,439.68

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Solution

The fourth proportional to 11,475.72, 15,836.76 and 6,439.68 is: 8,886.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,475.72 : 15,836.76 = 6,439.68 : x
  2. Step 2: Convert to fraction form
    11,475.72/15,836.76 = 6,439.68/x
  3. Step 3: Cross multiply
    11,475.72x = 15,836.76 × 6,439.68
  4. Step 4: Simplify right side
    11,475.72x = 101,983,666.64
  5. Step 5: Solve for x
    x = 101,983,666.64/11,475.72
  6. Step 6: Final answer
    x = 8,886.91

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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.