Home / 30,349.27-41,888.70-19,720.45

Finding the Fourth Proportional to 30,349.27, 41,888.70 and 19,720.45

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Solution

The fourth proportional to 30,349.27, 41,888.70 and 19,720.45 is: 27,218.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,349.27 : 41,888.70 = 19,720.45 : x
  2. Step 2: Convert to fraction form
    30,349.27/41,888.70 = 19,720.45/x
  3. Step 3: Cross multiply
    30,349.27x = 41,888.70 × 19,720.45
  4. Step 4: Simplify right side
    30,349.27x = 826,063,705.87
  5. Step 5: Solve for x
    x = 826,063,705.87/30,349.27
  6. Step 6: Final answer
    x = 27,218.57

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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.