Home / 20,931.35-31,401.34-6,892.22

Finding the Fourth Proportional to 20,931.35, 31,401.34 and 6,892.22

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Solution

The fourth proportional to 20,931.35, 31,401.34 and 6,892.22 is: 10,339.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,931.35 : 31,401.34 = 6,892.22 : x
  2. Step 2: Convert to fraction form
    20,931.35/31,401.34 = 6,892.22/x
  3. Step 3: Cross multiply
    20,931.35x = 31,401.34 × 6,892.22
  4. Step 4: Simplify right side
    20,931.35x = 216,424,803.80
  5. Step 5: Solve for x
    x = 216,424,803.80/20,931.35
  6. Step 6: Final answer
    x = 10,339.75

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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.