Home / 11,438.31-15,785.15-6,402.49

Finding the Fourth Proportional to 11,438.31, 15,785.15 and 6,402.49

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Solution

The fourth proportional to 11,438.31, 15,785.15 and 6,402.49 is: 8,835.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,438.31 : 15,785.15 = 6,402.49 : x
  2. Step 2: Convert to fraction form
    11,438.31/15,785.15 = 6,402.49/x
  3. Step 3: Cross multiply
    11,438.31x = 15,785.15 × 6,402.49
  4. Step 4: Simplify right side
    11,438.31x = 101,064,265.02
  5. Step 5: Solve for x
    x = 101,064,265.02/11,438.31
  6. Step 6: Final answer
    x = 8,835.59

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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.