Home / 21,188.76-29,240.48-11,757.38

Finding the Fourth Proportional to 21,188.76, 29,240.48 and 11,757.38

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Solution

The fourth proportional to 21,188.76, 29,240.48 and 11,757.38 is: 16,225.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.76 : 29,240.48 = 11,757.38 : x
  2. Step 2: Convert to fraction form
    21,188.76/29,240.48 = 11,757.38/x
  3. Step 3: Cross multiply
    21,188.76x = 29,240.48 × 11,757.38
  4. Step 4: Simplify right side
    21,188.76x = 343,791,434.74
  5. Step 5: Solve for x
    x = 343,791,434.74/21,188.76
  6. Step 6: Final answer
    x = 16,225.18

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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.