Home / 30,349.39-41,888.88-19,720.57

Finding the Fourth Proportional to 30,349.39, 41,888.88 and 19,720.57

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Solution

The fourth proportional to 30,349.39, 41,888.88 and 19,720.57 is: 27,218.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,349.39 : 41,888.88 = 19,720.57 : x
  2. Step 2: Convert to fraction form
    30,349.39/41,888.88 = 19,720.57/x
  3. Step 3: Cross multiply
    30,349.39x = 41,888.88 × 19,720.57
  4. Step 4: Simplify right side
    30,349.39x = 826,072,590.26
  5. Step 5: Solve for x
    x = 826,072,590.26/30,349.39
  6. Step 6: Final answer
    x = 27,218.75

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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.