Home / 30,112.48-41,569.67-21,167.65

Finding the Fourth Proportional to 30,112.48, 41,569.67 and 21,167.65

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Solution

The fourth proportional to 30,112.48, 41,569.67 and 21,167.65 is: 29,221.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,112.48 : 41,569.67 = 21,167.65 : x
  2. Step 2: Convert to fraction form
    30,112.48/41,569.67 = 21,167.65/x
  3. Step 3: Cross multiply
    30,112.48x = 41,569.67 × 21,167.65
  4. Step 4: Simplify right side
    30,112.48x = 879,932,225.18
  5. Step 5: Solve for x
    x = 879,932,225.18/30,112.48
  6. Step 6: Final answer
    x = 29,221.51

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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.