Home / 15,777.72-21,766.36-10,393.20

Finding the Fourth Proportional to 15,777.72, 21,766.36 and 10,393.20

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Solution

The fourth proportional to 15,777.72, 21,766.36 and 10,393.20 is: 14,338.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,777.72 : 21,766.36 = 10,393.20 : x
  2. Step 2: Convert to fraction form
    15,777.72/21,766.36 = 10,393.20/x
  3. Step 3: Cross multiply
    15,777.72x = 21,766.36 × 10,393.20
  4. Step 4: Simplify right side
    15,777.72x = 226,222,132.75
  5. Step 5: Solve for x
    x = 226,222,132.75/15,777.72
  6. Step 6: Final answer
    x = 14,338.08

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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.