Home / 18,285.72-25,234.32-9,902.22

Finding the Fourth Proportional to 18,285.72, 25,234.32 and 9,902.22

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Solution

The fourth proportional to 18,285.72, 25,234.32 and 9,902.22 is: 13,665.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,285.72 : 25,234.32 = 9,902.22 : x
  2. Step 2: Convert to fraction form
    18,285.72/25,234.32 = 9,902.22/x
  3. Step 3: Cross multiply
    18,285.72x = 25,234.32 × 9,902.22
  4. Step 4: Simplify right side
    18,285.72x = 249,875,788.19
  5. Step 5: Solve for x
    x = 249,875,788.19/18,285.72
  6. Step 6: Final answer
    x = 13,665.08

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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.