Home / 15,291.58-21,100.70-8,575.83

Finding the Fourth Proportional to 15,291.58, 21,100.70 and 8,575.83

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Solution

The fourth proportional to 15,291.58, 21,100.70 and 8,575.83 is: 11,833.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,291.58 : 21,100.70 = 8,575.83 : x
  2. Step 2: Convert to fraction form
    15,291.58/21,100.70 = 8,575.83/x
  3. Step 3: Cross multiply
    15,291.58x = 21,100.70 × 8,575.83
  4. Step 4: Simplify right side
    15,291.58x = 180,956,016.08
  5. Step 5: Solve for x
    x = 180,956,016.08/15,291.58
  6. Step 6: Final answer
    x = 11,833.70

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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.