Home / 18,860.31-28,280.75-7,764.93

Finding the Fourth Proportional to 18,860.31, 28,280.75 and 7,764.93

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Solution

The fourth proportional to 18,860.31, 28,280.75 and 7,764.93 is: 11,643.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,860.31 : 28,280.75 = 7,764.93 : x
  2. Step 2: Convert to fraction form
    18,860.31/28,280.75 = 7,764.93/x
  3. Step 3: Cross multiply
    18,860.31x = 28,280.75 × 7,764.93
  4. Step 4: Simplify right side
    18,860.31x = 219,598,005.27
  5. Step 5: Solve for x
    x = 219,598,005.27/18,860.31
  6. Step 6: Final answer
    x = 11,643.39

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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.