Home / 15,327.64-21,152.51-8,612.86

Finding the Fourth Proportional to 15,327.64, 21,152.51 and 8,612.86

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Solution

The fourth proportional to 15,327.64, 21,152.51 and 8,612.86 is: 11,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.64 : 21,152.51 = 8,612.86 : x
  2. Step 2: Convert to fraction form
    15,327.64/21,152.51 = 8,612.86/x
  3. Step 3: Cross multiply
    15,327.64x = 21,152.51 × 8,612.86
  4. Step 4: Simplify right side
    15,327.64x = 182,183,628.81
  5. Step 5: Solve for x
    x = 182,183,628.81/15,327.64
  6. Step 6: Final answer
    x = 11,885.96

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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.