Home / 15,671.88-21,621.20-10,006.84

Finding the Fourth Proportional to 15,671.88, 21,621.20 and 10,006.84

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Solution

The fourth proportional to 15,671.88, 21,621.20 and 10,006.84 is: 13,805.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,671.88 : 21,621.20 = 10,006.84 : x
  2. Step 2: Convert to fraction form
    15,671.88/21,621.20 = 10,006.84/x
  3. Step 3: Cross multiply
    15,671.88x = 21,621.20 × 10,006.84
  4. Step 4: Simplify right side
    15,671.88x = 216,359,889.01
  5. Step 5: Solve for x
    x = 216,359,889.01/15,671.88
  6. Step 6: Final answer
    x = 13,805.61

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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.