Home / 28,920.18-43,388.10-9,199.20

Finding the Fourth Proportional to 28,920.18, 43,388.10 and 9,199.20

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Solution

The fourth proportional to 28,920.18, 43,388.10 and 9,199.20 is: 13,801.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.18 : 43,388.10 = 9,199.20 : x
  2. Step 2: Convert to fraction form
    28,920.18/43,388.10 = 9,199.20/x
  3. Step 3: Cross multiply
    28,920.18x = 43,388.10 × 9,199.20
  4. Step 4: Simplify right side
    28,920.18x = 399,135,809.52
  5. Step 5: Solve for x
    x = 399,135,809.52/28,920.18
  6. Step 6: Final answer
    x = 13,801.29

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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.