Home / 12,508.20-17,258.40-8,537.58

Finding the Fourth Proportional to 12,508.20, 17,258.40 and 8,537.58

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Solution

The fourth proportional to 12,508.20, 17,258.40 and 8,537.58 is: 11,779.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.20 : 17,258.40 = 8,537.58 : x
  2. Step 2: Convert to fraction form
    12,508.20/17,258.40 = 8,537.58/x
  3. Step 3: Cross multiply
    12,508.20x = 17,258.40 × 8,537.58
  4. Step 4: Simplify right side
    12,508.20x = 147,344,970.67
  5. Step 5: Solve for x
    x = 147,344,970.67/12,508.20
  6. Step 6: Final answer
    x = 11,779.87

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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.