Home / 15,694.90-21,644.10-10,307.86

Finding the Fourth Proportional to 15,694.90, 21,644.10 and 10,307.86

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Solution

The fourth proportional to 15,694.90, 21,644.10 and 10,307.86 is: 14,215.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,694.90 : 21,644.10 = 10,307.86 : x
  2. Step 2: Convert to fraction form
    15,694.90/21,644.10 = 10,307.86/x
  3. Step 3: Cross multiply
    15,694.90x = 21,644.10 × 10,307.86
  4. Step 4: Simplify right side
    15,694.90x = 223,104,352.63
  5. Step 5: Solve for x
    x = 223,104,352.63/15,694.90
  6. Step 6: Final answer
    x = 14,215.09

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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.