Home / 20,221.88-30,338.80-10,368.07

Finding the Fourth Proportional to 20,221.88, 30,338.80 and 10,368.07

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Solution

The fourth proportional to 20,221.88, 30,338.80 and 10,368.07 is: 15,555.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.88 : 30,338.80 = 10,368.07 : x
  2. Step 2: Convert to fraction form
    20,221.88/30,338.80 = 10,368.07/x
  3. Step 3: Cross multiply
    20,221.88x = 30,338.80 × 10,368.07
  4. Step 4: Simplify right side
    20,221.88x = 314,554,700.35
  5. Step 5: Solve for x
    x = 314,554,700.35/20,221.88
  6. Step 6: Final answer
    x = 15,555.17

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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.