Home / 15,705.28-21,672.60-8,534.92

Finding the Fourth Proportional to 15,705.28, 21,672.60 and 8,534.92

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Solution

The fourth proportional to 15,705.28, 21,672.60 and 8,534.92 is: 11,777.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,705.28 : 21,672.60 = 8,534.92 : x
  2. Step 2: Convert to fraction form
    15,705.28/21,672.60 = 8,534.92/x
  3. Step 3: Cross multiply
    15,705.28x = 21,672.60 × 8,534.92
  4. Step 4: Simplify right side
    15,705.28x = 184,973,907.19
  5. Step 5: Solve for x
    x = 184,973,907.19/15,705.28
  6. Step 6: Final answer
    x = 11,777.82

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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.