Home / 20,221.74-30,303.45-11,438.51

Finding the Fourth Proportional to 20,221.74, 30,303.45 and 11,438.51

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Solution

The fourth proportional to 20,221.74, 30,303.45 and 11,438.51 is: 17,141.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.74 : 30,303.45 = 11,438.51 : x
  2. Step 2: Convert to fraction form
    20,221.74/30,303.45 = 11,438.51/x
  3. Step 3: Cross multiply
    20,221.74x = 30,303.45 × 11,438.51
  4. Step 4: Simplify right side
    20,221.74x = 346,626,164.34
  5. Step 5: Solve for x
    x = 346,626,164.34/20,221.74
  6. Step 6: Final answer
    x = 17,141.26

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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.