Home / 18,935.96-28,362.56-15,611.72

Finding the Fourth Proportional to 18,935.96, 28,362.56 and 15,611.72

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Solution

The fourth proportional to 18,935.96, 28,362.56 and 15,611.72 is: 23,383.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.96 : 28,362.56 = 15,611.72 : x
  2. Step 2: Convert to fraction form
    18,935.96/28,362.56 = 15,611.72/x
  3. Step 3: Cross multiply
    18,935.96x = 28,362.56 × 15,611.72
  4. Step 4: Simplify right side
    18,935.96x = 442,788,345.20
  5. Step 5: Solve for x
    x = 442,788,345.20/18,935.96
  6. Step 6: Final answer
    x = 23,383.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.