Home / 20,885.94-31,289.67-10,343.70

Finding the Fourth Proportional to 20,885.94, 31,289.67 and 10,343.70

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Solution

The fourth proportional to 20,885.94, 31,289.67 and 10,343.70 is: 15,496.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.94 : 31,289.67 = 10,343.70 : x
  2. Step 2: Convert to fraction form
    20,885.94/31,289.67 = 10,343.70/x
  3. Step 3: Cross multiply
    20,885.94x = 31,289.67 × 10,343.70
  4. Step 4: Simplify right side
    20,885.94x = 323,650,959.58
  5. Step 5: Solve for x
    x = 323,650,959.58/20,885.94
  6. Step 6: Final answer
    x = 15,496.12

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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.