Home / 28,223.19-38,947.41-15,647.94

Finding the Fourth Proportional to 28,223.19, 38,947.41 and 15,647.94

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Solution

The fourth proportional to 28,223.19, 38,947.41 and 15,647.94 is: 21,593.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.19 : 38,947.41 = 15,647.94 : x
  2. Step 2: Convert to fraction form
    28,223.19/38,947.41 = 15,647.94/x
  3. Step 3: Cross multiply
    28,223.19x = 38,947.41 × 15,647.94
  4. Step 4: Simplify right side
    28,223.19x = 609,446,734.84
  5. Step 5: Solve for x
    x = 609,446,734.84/28,223.19
  6. Step 6: Final answer
    x = 21,593.83

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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.