Home / 15,449.31-21,319.83-8,734.77

Finding the Fourth Proportional to 15,449.31, 21,319.83 and 8,734.77

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Solution

The fourth proportional to 15,449.31, 21,319.83 and 8,734.77 is: 12,053.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.31 : 21,319.83 = 8,734.77 : x
  2. Step 2: Convert to fraction form
    15,449.31/21,319.83 = 8,734.77/x
  3. Step 3: Cross multiply
    15,449.31x = 21,319.83 × 8,734.77
  4. Step 4: Simplify right side
    15,449.31x = 186,223,811.49
  5. Step 5: Solve for x
    x = 186,223,811.49/15,449.31
  6. Step 6: Final answer
    x = 12,053.86

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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.