Home / 21,320.52-29,423.48-11,889.04

Finding the Fourth Proportional to 21,320.52, 29,423.48 and 11,889.04

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Solution

The fourth proportional to 21,320.52, 29,423.48 and 11,889.04 is: 16,407.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.52 : 29,423.48 = 11,889.04 : x
  2. Step 2: Convert to fraction form
    21,320.52/29,423.48 = 11,889.04/x
  3. Step 3: Cross multiply
    21,320.52x = 29,423.48 × 11,889.04
  4. Step 4: Simplify right side
    21,320.52x = 349,816,930.66
  5. Step 5: Solve for x
    x = 349,816,930.66/21,320.52
  6. Step 6: Final answer
    x = 16,407.52

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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.