Home / 15,523.45-21,425.31-8,809.70

Finding the Fourth Proportional to 15,523.45, 21,425.31 and 8,809.70

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Solution

The fourth proportional to 15,523.45, 21,425.31 and 8,809.70 is: 12,159.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.45 : 21,425.31 = 8,809.70 : x
  2. Step 2: Convert to fraction form
    15,523.45/21,425.31 = 8,809.70/x
  3. Step 3: Cross multiply
    15,523.45x = 21,425.31 × 8,809.70
  4. Step 4: Simplify right side
    15,523.45x = 188,750,536.77
  5. Step 5: Solve for x
    x = 188,750,536.77/15,523.45
  6. Step 6: Final answer
    x = 12,159.06

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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.