Home / 20,904.51-31,359-6,113.52

Finding the Fourth Proportional to 20,904.51, 31,359 and 6,113.52

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Solution

The fourth proportional to 20,904.51, 31,359 and 6,113.52 is: 9,170.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.51 : 31,359 = 6,113.52 : x
  2. Step 2: Convert to fraction form
    20,904.51/31,359 = 6,113.52/x
  3. Step 3: Cross multiply
    20,904.51x = 31,359 × 6,113.52
  4. Step 4: Simplify right side
    20,904.51x = 191,713,873.68
  5. Step 5: Solve for x
    x = 191,713,873.68/20,904.51
  6. Step 6: Final answer
    x = 9,170.93

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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.