Home / 15,929.72-21,985.40-11,468.24

Finding the Fourth Proportional to 15,929.72, 21,985.40 and 11,468.24

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Solution

The fourth proportional to 15,929.72, 21,985.40 and 11,468.24 is: 15,827.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,929.72 : 21,985.40 = 11,468.24 : x
  2. Step 2: Convert to fraction form
    15,929.72/21,985.40 = 11,468.24/x
  3. Step 3: Cross multiply
    15,929.72x = 21,985.40 × 11,468.24
  4. Step 4: Simplify right side
    15,929.72x = 252,133,843.70
  5. Step 5: Solve for x
    x = 252,133,843.70/15,929.72
  6. Step 6: Final answer
    x = 15,827.89

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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.