Home / 15,809.06-21,819.52-10,422.04

Finding the Fourth Proportional to 15,809.06, 21,819.52 and 10,422.04

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Solution

The fourth proportional to 15,809.06, 21,819.52 and 10,422.04 is: 14,384.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,809.06 : 21,819.52 = 10,422.04 : x
  2. Step 2: Convert to fraction form
    15,809.06/21,819.52 = 10,422.04/x
  3. Step 3: Cross multiply
    15,809.06x = 21,819.52 × 10,422.04
  4. Step 4: Simplify right side
    15,809.06x = 227,403,910.22
  5. Step 5: Solve for x
    x = 227,403,910.22/15,809.06
  6. Step 6: Final answer
    x = 14,384.40

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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.