Home / 15,621.72-21,559.44-9,333.96

Finding the Fourth Proportional to 15,621.72, 21,559.44 and 9,333.96

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Solution

The fourth proportional to 15,621.72, 21,559.44 and 9,333.96 is: 12,881.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.72 : 21,559.44 = 9,333.96 : x
  2. Step 2: Convert to fraction form
    15,621.72/21,559.44 = 9,333.96/x
  3. Step 3: Cross multiply
    15,621.72x = 21,559.44 × 9,333.96
  4. Step 4: Simplify right side
    15,621.72x = 201,234,950.58
  5. Step 5: Solve for x
    x = 201,234,950.58/15,621.72
  6. Step 6: Final answer
    x = 12,881.74

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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.