Home / 15,500.87-21,390.94-8,427.24

Finding the Fourth Proportional to 15,500.87, 21,390.94 and 8,427.24

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Solution

The fourth proportional to 15,500.87, 21,390.94 and 8,427.24 is: 11,629.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.87 : 21,390.94 = 8,427.24 : x
  2. Step 2: Convert to fraction form
    15,500.87/21,390.94 = 8,427.24/x
  3. Step 3: Cross multiply
    15,500.87x = 21,390.94 × 8,427.24
  4. Step 4: Simplify right side
    15,500.87x = 180,266,548.34
  5. Step 5: Solve for x
    x = 180,266,548.34/15,500.87
  6. Step 6: Final answer
    x = 11,629.45

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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.