Home / 15,208.32-20,981.70-11,238.96

Finding the Fourth Proportional to 15,208.32, 20,981.70 and 11,238.96

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Solution

The fourth proportional to 15,208.32, 20,981.70 and 11,238.96 is: 15,505.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,208.32 : 20,981.70 = 11,238.96 : x
  2. Step 2: Convert to fraction form
    15,208.32/20,981.70 = 11,238.96/x
  3. Step 3: Cross multiply
    15,208.32x = 20,981.70 × 11,238.96
  4. Step 4: Simplify right side
    15,208.32x = 235,812,487.03
  5. Step 5: Solve for x
    x = 235,812,487.03/15,208.32
  6. Step 6: Final answer
    x = 15,505.49

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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.