Home / 15,621.48-21,557.88-8,548.56

Finding the Fourth Proportional to 15,621.48, 21,557.88 and 8,548.56

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Solution

The fourth proportional to 15,621.48, 21,557.88 and 8,548.56 is: 11,797.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.48 : 21,557.88 = 8,548.56 : x
  2. Step 2: Convert to fraction form
    15,621.48/21,557.88 = 8,548.56/x
  3. Step 3: Cross multiply
    15,621.48x = 21,557.88 × 8,548.56
  4. Step 4: Simplify right side
    15,621.48x = 184,288,830.65
  5. Step 5: Solve for x
    x = 184,288,830.65/15,621.48
  6. Step 6: Final answer
    x = 11,797.14

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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.