Home / 15,440.96-21,308.40-9,156.32

Finding the Fourth Proportional to 15,440.96, 21,308.40 and 9,156.32

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Solution

The fourth proportional to 15,440.96, 21,308.40 and 9,156.32 is: 12,635.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.96 : 21,308.40 = 9,156.32 : x
  2. Step 2: Convert to fraction form
    15,440.96/21,308.40 = 9,156.32/x
  3. Step 3: Cross multiply
    15,440.96x = 21,308.40 × 9,156.32
  4. Step 4: Simplify right side
    15,440.96x = 195,106,529.09
  5. Step 5: Solve for x
    x = 195,106,529.09/15,440.96
  6. Step 6: Final answer
    x = 12,635.65

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Double scale
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Similar ratio
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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.