Home / 21,360.16-29,473.44-11,928.76

Finding the Fourth Proportional to 21,360.16, 29,473.44 and 11,928.76

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Solution

The fourth proportional to 21,360.16, 29,473.44 and 11,928.76 is: 16,459.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,360.16 : 29,473.44 = 11,928.76 : x
  2. Step 2: Convert to fraction form
    21,360.16/29,473.44 = 11,928.76/x
  3. Step 3: Cross multiply
    21,360.16x = 29,473.44 × 11,928.76
  4. Step 4: Simplify right side
    21,360.16x = 351,581,592.13
  5. Step 5: Solve for x
    x = 351,581,592.13/21,360.16
  6. Step 6: Final answer
    x = 16,459.69

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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.