Home / 28,521.50-39,359.75-15,946.25

Finding the Fourth Proportional to 28,521.50, 39,359.75 and 15,946.25

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Solution

The fourth proportional to 28,521.50, 39,359.75 and 15,946.25 is: 22,005.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,521.50 : 39,359.75 = 15,946.25 : x
  2. Step 2: Convert to fraction form
    28,521.50/39,359.75 = 15,946.25/x
  3. Step 3: Cross multiply
    28,521.50x = 39,359.75 × 15,946.25
  4. Step 4: Simplify right side
    28,521.50x = 627,640,136.91
  5. Step 5: Solve for x
    x = 627,640,136.91/28,521.50
  6. Step 6: Final answer
    x = 22,005.86

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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.