Home / 20,904.86-31,349.11-7,574.69

Finding the Fourth Proportional to 20,904.86, 31,349.11 and 7,574.69

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Solution

The fourth proportional to 20,904.86, 31,349.11 and 7,574.69 is: 11,359.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.86 : 31,349.11 = 7,574.69 : x
  2. Step 2: Convert to fraction form
    20,904.86/31,349.11 = 7,574.69/x
  3. Step 3: Cross multiply
    20,904.86x = 31,349.11 × 7,574.69
  4. Step 4: Simplify right side
    20,904.86x = 237,459,633.28
  5. Step 5: Solve for x
    x = 237,459,633.28/20,904.86
  6. Step 6: Final answer
    x = 11,359.07

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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.