Home / 21,159.55-29,200.08-11,599.42

Finding the Fourth Proportional to 21,159.55, 29,200.08 and 11,599.42

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Solution

The fourth proportional to 21,159.55, 29,200.08 and 11,599.42 is: 16,007.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.55 : 29,200.08 = 11,599.42 : x
  2. Step 2: Convert to fraction form
    21,159.55/29,200.08 = 11,599.42/x
  3. Step 3: Cross multiply
    21,159.55x = 29,200.08 × 11,599.42
  4. Step 4: Simplify right side
    21,159.55x = 338,703,991.95
  5. Step 5: Solve for x
    x = 338,703,991.95/21,159.55
  6. Step 6: Final answer
    x = 16,007.15

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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.