Home / 15,236.50-21,028.80-8,947.66

Finding the Fourth Proportional to 15,236.50, 21,028.80 and 8,947.66

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Solution

The fourth proportional to 15,236.50, 21,028.80 and 8,947.66 is: 12,349.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,236.50 : 21,028.80 = 8,947.66 : x
  2. Step 2: Convert to fraction form
    15,236.50/21,028.80 = 8,947.66/x
  3. Step 3: Cross multiply
    15,236.50x = 21,028.80 × 8,947.66
  4. Step 4: Simplify right side
    15,236.50x = 188,158,552.61
  5. Step 5: Solve for x
    x = 188,158,552.61/15,236.50
  6. Step 6: Final answer
    x = 12,349.20

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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.