Home / 20,667.61-31,001.21-5,085.24

Finding the Fourth Proportional to 20,667.61, 31,001.21 and 5,085.24

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Solution

The fourth proportional to 20,667.61, 31,001.21 and 5,085.24 is: 7,627.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.61 : 31,001.21 = 5,085.24 : x
  2. Step 2: Convert to fraction form
    20,667.61/31,001.21 = 5,085.24/x
  3. Step 3: Cross multiply
    20,667.61x = 31,001.21 × 5,085.24
  4. Step 4: Simplify right side
    20,667.61x = 157,648,593.14
  5. Step 5: Solve for x
    x = 157,648,593.14/20,667.61
  6. Step 6: Final answer
    x = 7,627.81

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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.