Home / 15,392.16-21,241.20-8,318.56

Finding the Fourth Proportional to 15,392.16, 21,241.20 and 8,318.56

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Solution

The fourth proportional to 15,392.16, 21,241.20 and 8,318.56 is: 11,479.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,392.16 : 21,241.20 = 8,318.56 : x
  2. Step 2: Convert to fraction form
    15,392.16/21,241.20 = 8,318.56/x
  3. Step 3: Cross multiply
    15,392.16x = 21,241.20 × 8,318.56
  4. Step 4: Simplify right side
    15,392.16x = 176,696,196.67
  5. Step 5: Solve for x
    x = 176,696,196.67/15,392.16
  6. Step 6: Final answer
    x = 11,479.62

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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.