Home / 15,010.62-20,716.47-9,420.54

Finding the Fourth Proportional to 15,010.62, 20,716.47 and 9,420.54

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Solution

The fourth proportional to 15,010.62, 20,716.47 and 9,420.54 is: 13,001.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,010.62 : 20,716.47 = 9,420.54 : x
  2. Step 2: Convert to fraction form
    15,010.62/20,716.47 = 9,420.54/x
  3. Step 3: Cross multiply
    15,010.62x = 20,716.47 × 9,420.54
  4. Step 4: Simplify right side
    15,010.62x = 195,160,334.29
  5. Step 5: Solve for x
    x = 195,160,334.29/15,010.62
  6. Step 6: Final answer
    x = 13,001.48

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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.