Home / 28,136.20-38,822.34-15,558.52

Finding the Fourth Proportional to 28,136.20, 38,822.34 and 15,558.52

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Solution

The fourth proportional to 28,136.20, 38,822.34 and 15,558.52 is: 21,467.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.20 : 38,822.34 = 15,558.52 : x
  2. Step 2: Convert to fraction form
    28,136.20/38,822.34 = 15,558.52/x
  3. Step 3: Cross multiply
    28,136.20x = 38,822.34 × 15,558.52
  4. Step 4: Simplify right side
    28,136.20x = 604,018,153.34
  5. Step 5: Solve for x
    x = 604,018,153.34/28,136.20
  6. Step 6: Final answer
    x = 21,467.65

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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.