Home / 31,829.48-47,719.26-20,118.12

Finding the Fourth Proportional to 31,829.48, 47,719.26 and 20,118.12

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Solution

The fourth proportional to 31,829.48, 47,719.26 and 20,118.12 is: 30,161.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,829.48 : 47,719.26 = 20,118.12 : x
  2. Step 2: Convert to fraction form
    31,829.48/47,719.26 = 20,118.12/x
  3. Step 3: Cross multiply
    31,829.48x = 47,719.26 × 20,118.12
  4. Step 4: Simplify right side
    31,829.48x = 960,021,798.99
  5. Step 5: Solve for x
    x = 960,021,798.99/31,829.48
  6. Step 6: Final answer
    x = 30,161.40

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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.