Home / 28,578.60-42,896.70-13,799.40

Finding the Fourth Proportional to 28,578.60, 42,896.70 and 13,799.40

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Solution

The fourth proportional to 28,578.60, 42,896.70 and 13,799.40 is: 20,713.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,578.60 : 42,896.70 = 13,799.40 : x
  2. Step 2: Convert to fraction form
    28,578.60/42,896.70 = 13,799.40/x
  3. Step 3: Cross multiply
    28,578.60x = 42,896.70 × 13,799.40
  4. Step 4: Simplify right side
    28,578.60x = 591,948,721.98
  5. Step 5: Solve for x
    x = 591,948,721.98/28,578.60
  6. Step 6: Final answer
    x = 20,713.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.