Home / 20,945.99-31,412.33-6,903.40

Finding the Fourth Proportional to 20,945.99, 31,412.33 and 6,903.40

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Solution

The fourth proportional to 20,945.99, 31,412.33 and 6,903.40 is: 10,352.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.99 : 31,412.33 = 6,903.40 : x
  2. Step 2: Convert to fraction form
    20,945.99/31,412.33 = 6,903.40/x
  3. Step 3: Cross multiply
    20,945.99x = 31,412.33 × 6,903.40
  4. Step 4: Simplify right side
    20,945.99x = 216,851,844.41
  5. Step 5: Solve for x
    x = 216,851,844.41/20,945.99
  6. Step 6: Final answer
    x = 10,352.90

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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.