Home / 21,188.14-29,239.65-11,756.70

Finding the Fourth Proportional to 21,188.14, 29,239.65 and 11,756.70

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Solution

The fourth proportional to 21,188.14, 29,239.65 and 11,756.70 is: 16,224.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.14 : 29,239.65 = 11,756.70 : x
  2. Step 2: Convert to fraction form
    21,188.14/29,239.65 = 11,756.70/x
  3. Step 3: Cross multiply
    21,188.14x = 29,239.65 × 11,756.70
  4. Step 4: Simplify right side
    21,188.14x = 343,761,793.16
  5. Step 5: Solve for x
    x = 343,761,793.16/21,188.14
  6. Step 6: Final answer
    x = 16,224.26

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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.