Home / 28,920.72-43,390.80-9,202.08

Finding the Fourth Proportional to 28,920.72, 43,390.80 and 9,202.08

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Solution

The fourth proportional to 28,920.72, 43,390.80 and 9,202.08 is: 13,806.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.72 : 43,390.80 = 9,202.08 : x
  2. Step 2: Convert to fraction form
    28,920.72/43,390.80 = 9,202.08/x
  3. Step 3: Cross multiply
    28,920.72x = 43,390.80 × 9,202.08
  4. Step 4: Simplify right side
    28,920.72x = 399,285,612.86
  5. Step 5: Solve for x
    x = 399,285,612.86/28,920.72
  6. Step 6: Final answer
    x = 13,806.21

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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.