Home / 21,159.56-29,200.37-11,728.13

Finding the Fourth Proportional to 21,159.56, 29,200.37 and 11,728.13

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Solution

The fourth proportional to 21,159.56, 29,200.37 and 11,728.13 is: 16,184.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.56 : 29,200.37 = 11,728.13 : x
  2. Step 2: Convert to fraction form
    21,159.56/29,200.37 = 11,728.13/x
  3. Step 3: Cross multiply
    21,159.56x = 29,200.37 × 11,728.13
  4. Step 4: Simplify right side
    21,159.56x = 342,465,530.77
  5. Step 5: Solve for x
    x = 342,465,530.77/21,159.56
  6. Step 6: Final answer
    x = 16,184.91

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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.