Home / 15,621.68-21,557.89-8,548.10

Finding the Fourth Proportional to 15,621.68, 21,557.89 and 8,548.10

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Solution

The fourth proportional to 15,621.68, 21,557.89 and 8,548.10 is: 11,796.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.68 : 21,557.89 = 8,548.10 : x
  2. Step 2: Convert to fraction form
    15,621.68/21,557.89 = 8,548.10/x
  3. Step 3: Cross multiply
    15,621.68x = 21,557.89 × 8,548.10
  4. Step 4: Simplify right side
    15,621.68x = 184,278,999.51
  5. Step 5: Solve for x
    x = 184,278,999.51/15,621.68
  6. Step 6: Final answer
    x = 11,796.36

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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.