Home / 10,388.96-15,653.56-8,580.58

Finding the Fourth Proportional to 10,388.96, 15,653.56 and 8,580.58

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Solution

The fourth proportional to 10,388.96, 15,653.56 and 8,580.58 is: 12,928.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,388.96 : 15,653.56 = 8,580.58 : x
  2. Step 2: Convert to fraction form
    10,388.96/15,653.56 = 8,580.58/x
  3. Step 3: Cross multiply
    10,388.96x = 15,653.56 × 8,580.58
  4. Step 4: Simplify right side
    10,388.96x = 134,316,563.28
  5. Step 5: Solve for x
    x = 134,316,563.28/10,388.96
  6. Step 6: Final answer
    x = 12,928.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.