Home / 20,919.16-31,341.84-11,036.66

Finding the Fourth Proportional to 20,919.16, 31,341.84 and 11,036.66

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Solution

The fourth proportional to 20,919.16, 31,341.84 and 11,036.66 is: 16,535.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,919.16 : 31,341.84 = 11,036.66 : x
  2. Step 2: Convert to fraction form
    20,919.16/31,341.84 = 11,036.66/x
  3. Step 3: Cross multiply
    20,919.16x = 31,341.84 × 11,036.66
  4. Step 4: Simplify right side
    20,919.16x = 345,909,033.76
  5. Step 5: Solve for x
    x = 345,909,033.76/20,919.16
  6. Step 6: Final answer
    x = 16,535.51

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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.