Home / 28,499.78-39,328.92-15,924.53

Finding the Fourth Proportional to 28,499.78, 39,328.92 and 15,924.53

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Solution

The fourth proportional to 28,499.78, 39,328.92 and 15,924.53 is: 21,975.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,499.78 : 39,328.92 = 15,924.53 : x
  2. Step 2: Convert to fraction form
    28,499.78/39,328.92 = 15,924.53/x
  3. Step 3: Cross multiply
    28,499.78x = 39,328.92 × 15,924.53
  4. Step 4: Simplify right side
    28,499.78x = 626,294,566.41
  5. Step 5: Solve for x
    x = 626,294,566.41/28,499.78
  6. Step 6: Final answer
    x = 21,975.42

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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.