Home / 28,521-39,359.84-15,945.80

Finding the Fourth Proportional to 28,521, 39,359.84 and 15,945.80

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Solution

The fourth proportional to 28,521, 39,359.84 and 15,945.80 is: 22,005.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,521 : 39,359.84 = 15,945.80 : x
  2. Step 2: Convert to fraction form
    28,521/39,359.84 = 15,945.80/x
  3. Step 3: Cross multiply
    28,521x = 39,359.84 × 15,945.80
  4. Step 4: Simplify right side
    28,521x = 627,624,136.67
  5. Step 5: Solve for x
    x = 627,624,136.67/28,521
  6. Step 6: Final answer
    x = 22,005.68

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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.