Home / 15,327.92-21,153.76-8,956.56

Finding the Fourth Proportional to 15,327.92, 21,153.76 and 8,956.56

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Solution

The fourth proportional to 15,327.92, 21,153.76 and 8,956.56 is: 12,360.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.92 : 21,153.76 = 8,956.56 : x
  2. Step 2: Convert to fraction form
    15,327.92/21,153.76 = 8,956.56/x
  3. Step 3: Cross multiply
    15,327.92x = 21,153.76 × 8,956.56
  4. Step 4: Simplify right side
    15,327.92x = 189,464,920.67
  5. Step 5: Solve for x
    x = 189,464,920.67/15,327.92
  6. Step 6: Final answer
    x = 12,360.77

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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.