Home / 21,360.48-29,475.66-11,928.84

Finding the Fourth Proportional to 21,360.48, 29,475.66 and 11,928.84

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Solution

The fourth proportional to 21,360.48, 29,475.66 and 11,928.84 is: 16,460.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,360.48 : 29,475.66 = 11,928.84 : x
  2. Step 2: Convert to fraction form
    21,360.48/29,475.66 = 11,928.84/x
  3. Step 3: Cross multiply
    21,360.48x = 29,475.66 × 11,928.84
  4. Step 4: Simplify right side
    21,360.48x = 351,610,432.03
  5. Step 5: Solve for x
    x = 351,610,432.03/21,360.48
  6. Step 6: Final answer
    x = 16,460.79

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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.