Home / 20,394.24-28,145.51-11,320.08

Finding the Fourth Proportional to 20,394.24, 28,145.51 and 11,320.08

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Solution

The fourth proportional to 20,394.24, 28,145.51 and 11,320.08 is: 15,622.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,394.24 : 28,145.51 = 11,320.08 : x
  2. Step 2: Convert to fraction form
    20,394.24/28,145.51 = 11,320.08/x
  3. Step 3: Cross multiply
    20,394.24x = 28,145.51 × 11,320.08
  4. Step 4: Simplify right side
    20,394.24x = 318,609,424.84
  5. Step 5: Solve for x
    x = 318,609,424.84/20,394.24
  6. Step 6: Final answer
    x = 15,622.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.