Home / 20,939.64-31,414.10-6,904.01

Finding the Fourth Proportional to 20,939.64, 31,414.10 and 6,904.01

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Solution

The fourth proportional to 20,939.64, 31,414.10 and 6,904.01 is: 10,357.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939.64 : 31,414.10 = 6,904.01 : x
  2. Step 2: Convert to fraction form
    20,939.64/31,414.10 = 6,904.01/x
  3. Step 3: Cross multiply
    20,939.64x = 31,414.10 × 6,904.01
  4. Step 4: Simplify right side
    20,939.64x = 216,883,068.95
  5. Step 5: Solve for x
    x = 216,883,068.95/20,939.64
  6. Step 6: Final answer
    x = 10,357.54

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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.