Home / 15,715.96-21,688.45-8,546.36

Finding the Fourth Proportional to 15,715.96, 21,688.45 and 8,546.36

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Solution

The fourth proportional to 15,715.96, 21,688.45 and 8,546.36 is: 11,794.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,715.96 : 21,688.45 = 8,546.36 : x
  2. Step 2: Convert to fraction form
    15,715.96/21,688.45 = 8,546.36/x
  3. Step 3: Cross multiply
    15,715.96x = 21,688.45 × 8,546.36
  4. Step 4: Simplify right side
    15,715.96x = 185,357,171.73
  5. Step 5: Solve for x
    x = 185,357,171.73/15,715.96
  6. Step 6: Final answer
    x = 11,794.20

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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.