Home / 21,307.52-29,404.41-11,875.88

Finding the Fourth Proportional to 21,307.52, 29,404.41 and 11,875.88

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Solution

The fourth proportional to 21,307.52, 29,404.41 and 11,875.88 is: 16,388.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.52 : 29,404.41 = 11,875.88 : x
  2. Step 2: Convert to fraction form
    21,307.52/29,404.41 = 11,875.88/x
  3. Step 3: Cross multiply
    21,307.52x = 29,404.41 × 11,875.88
  4. Step 4: Simplify right side
    21,307.52x = 349,203,244.63
  5. Step 5: Solve for x
    x = 349,203,244.63/21,307.52
  6. Step 6: Final answer
    x = 16,388.73

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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.