Home / 28,578.66-39,437.98-15,832.70

Finding the Fourth Proportional to 28,578.66, 39,437.98 and 15,832.70

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Solution

The fourth proportional to 28,578.66, 39,437.98 and 15,832.70 is: 21,848.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,578.66 : 39,437.98 = 15,832.70 : x
  2. Step 2: Convert to fraction form
    28,578.66/39,437.98 = 15,832.70/x
  3. Step 3: Cross multiply
    28,578.66x = 39,437.98 × 15,832.70
  4. Step 4: Simplify right side
    28,578.66x = 624,409,705.95
  5. Step 5: Solve for x
    x = 624,409,705.95/28,578.66
  6. Step 6: Final answer
    x = 21,848.81

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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.