Home / 15,675.62-21,631.68-8,601.92

Finding the Fourth Proportional to 15,675.62, 21,631.68 and 8,601.92

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Solution

The fourth proportional to 15,675.62, 21,631.68 and 8,601.92 is: 11,870.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,675.62 : 21,631.68 = 8,601.92 : x
  2. Step 2: Convert to fraction form
    15,675.62/21,631.68 = 8,601.92/x
  3. Step 3: Cross multiply
    15,675.62x = 21,631.68 × 8,601.92
  4. Step 4: Simplify right side
    15,675.62x = 186,073,980.83
  5. Step 5: Solve for x
    x = 186,073,980.83/15,675.62
  6. Step 6: Final answer
    x = 11,870.28

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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.