Home / 15,314.91-21,135.08-8,601.73

Finding the Fourth Proportional to 15,314.91, 21,135.08 and 8,601.73

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Solution

The fourth proportional to 15,314.91, 21,135.08 and 8,601.73 is: 11,870.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,314.91 : 21,135.08 = 8,601.73 : x
  2. Step 2: Convert to fraction form
    15,314.91/21,135.08 = 8,601.73/x
  3. Step 3: Cross multiply
    15,314.91x = 21,135.08 × 8,601.73
  4. Step 4: Simplify right side
    15,314.91x = 181,798,251.69
  5. Step 5: Solve for x
    x = 181,798,251.69/15,314.91
  6. Step 6: Final answer
    x = 11,870.67

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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.