Home / 28,356.02-39,125.67-15,778.34

Finding the Fourth Proportional to 28,356.02, 39,125.67 and 15,778.34

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Solution

The fourth proportional to 28,356.02, 39,125.67 and 15,778.34 is: 21,770.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.02 : 39,125.67 = 15,778.34 : x
  2. Step 2: Convert to fraction form
    28,356.02/39,125.67 = 15,778.34/x
  3. Step 3: Cross multiply
    28,356.02x = 39,125.67 × 15,778.34
  4. Step 4: Simplify right side
    28,356.02x = 617,338,123.99
  5. Step 5: Solve for x
    x = 617,338,123.99/28,356.02
  6. Step 6: Final answer
    x = 21,770.97

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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.