Home / 20,314.36-30,451.38-11,531.08

Finding the Fourth Proportional to 20,314.36, 30,451.38 and 11,531.08

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Solution

The fourth proportional to 20,314.36, 30,451.38 and 11,531.08 is: 17,285.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,314.36 : 30,451.38 = 11,531.08 : x
  2. Step 2: Convert to fraction form
    20,314.36/30,451.38 = 11,531.08/x
  3. Step 3: Cross multiply
    20,314.36x = 30,451.38 × 11,531.08
  4. Step 4: Simplify right side
    20,314.36x = 351,137,298.89
  5. Step 5: Solve for x
    x = 351,137,298.89/20,314.36
  6. Step 6: Final answer
    x = 17,285.18

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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.