Home / 21,188.76-29,240.10-11,757.12

Finding the Fourth Proportional to 21,188.76, 29,240.10 and 11,757.12

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Solution

The fourth proportional to 21,188.76, 29,240.10 and 11,757.12 is: 16,224.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.76 : 29,240.10 = 11,757.12 : x
  2. Step 2: Convert to fraction form
    21,188.76/29,240.10 = 11,757.12/x
  3. Step 3: Cross multiply
    21,188.76x = 29,240.10 × 11,757.12
  4. Step 4: Simplify right side
    21,188.76x = 343,779,364.51
  5. Step 5: Solve for x
    x = 343,779,364.51/21,188.76
  6. Step 6: Final answer
    x = 16,224.61

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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.