Home / 15,451.40-21,322.80-8,738.34

Finding the Fourth Proportional to 15,451.40, 21,322.80 and 8,738.34

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Solution

The fourth proportional to 15,451.40, 21,322.80 and 8,738.34 is: 12,058.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.40 : 21,322.80 = 8,738.34 : x
  2. Step 2: Convert to fraction form
    15,451.40/21,322.80 = 8,738.34/x
  3. Step 3: Cross multiply
    15,451.40x = 21,322.80 × 8,738.34
  4. Step 4: Simplify right side
    15,451.40x = 186,325,876.15
  5. Step 5: Solve for x
    x = 186,325,876.15/15,451.40
  6. Step 6: Final answer
    x = 12,058.83

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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.