Home / 15,534.60-21,436.65-8,820.33

Finding the Fourth Proportional to 15,534.60, 21,436.65 and 8,820.33

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Solution

The fourth proportional to 15,534.60, 21,436.65 and 8,820.33 is: 12,171.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.60 : 21,436.65 = 8,820.33 : x
  2. Step 2: Convert to fraction form
    15,534.60/21,436.65 = 8,820.33/x
  3. Step 3: Cross multiply
    15,534.60x = 21,436.65 × 8,820.33
  4. Step 4: Simplify right side
    15,534.60x = 189,078,327.09
  5. Step 5: Solve for x
    x = 189,078,327.09/15,534.60
  6. Step 6: Final answer
    x = 12,171.43

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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.