Home / 21,748.58-30,011.62-12,794.36

Finding the Fourth Proportional to 21,748.58, 30,011.62 and 12,794.36

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Solution

The fourth proportional to 21,748.58, 30,011.62 and 12,794.36 is: 17,655.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,748.58 : 30,011.62 = 12,794.36 : x
  2. Step 2: Convert to fraction form
    21,748.58/30,011.62 = 12,794.36/x
  3. Step 3: Cross multiply
    21,748.58x = 30,011.62 × 12,794.36
  4. Step 4: Simplify right side
    21,748.58x = 383,979,320.41
  5. Step 5: Solve for x
    x = 383,979,320.41/21,748.58
  6. Step 6: Final answer
    x = 17,655.37

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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.