Home / 28,542.98-39,388.69-15,622.19

Finding the Fourth Proportional to 28,542.98, 39,388.69 and 15,622.19

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Solution

The fourth proportional to 28,542.98, 39,388.69 and 15,622.19 is: 21,558.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,542.98 : 39,388.69 = 15,622.19 : x
  2. Step 2: Convert to fraction form
    28,542.98/39,388.69 = 15,622.19/x
  3. Step 3: Cross multiply
    28,542.98x = 39,388.69 × 15,622.19
  4. Step 4: Simplify right side
    28,542.98x = 615,337,658.45
  5. Step 5: Solve for x
    x = 615,337,658.45/28,542.98
  6. Step 6: Final answer
    x = 21,558.28

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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.