Home / 15,675.35-21,631.12-8,601.21

Finding the Fourth Proportional to 15,675.35, 21,631.12 and 8,601.21

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Solution

The fourth proportional to 15,675.35, 21,631.12 and 8,601.21 is: 11,869.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,675.35 : 21,631.12 = 8,601.21 : x
  2. Step 2: Convert to fraction form
    15,675.35/21,631.12 = 8,601.21/x
  3. Step 3: Cross multiply
    15,675.35x = 21,631.12 × 8,601.21
  4. Step 4: Simplify right side
    15,675.35x = 186,053,784.15
  5. Step 5: Solve for x
    x = 186,053,784.15/15,675.35
  6. Step 6: Final answer
    x = 11,869.20

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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.