Home / 15,499.15-21,388.66-8,425.55

Finding the Fourth Proportional to 15,499.15, 21,388.66 and 8,425.55

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Solution

The fourth proportional to 15,499.15, 21,388.66 and 8,425.55 is: 11,627.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.15 : 21,388.66 = 8,425.55 : x
  2. Step 2: Convert to fraction form
    15,499.15/21,388.66 = 8,425.55/x
  3. Step 3: Cross multiply
    15,499.15x = 21,388.66 × 8,425.55
  4. Step 4: Simplify right side
    15,499.15x = 180,211,256.67
  5. Step 5: Solve for x
    x = 180,211,256.67/15,499.15
  6. Step 6: Final answer
    x = 11,627.17

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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.