Home / 30,112.47-41,569.66-21,167.64

Finding the Fourth Proportional to 30,112.47, 41,569.66 and 21,167.64

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Solution

The fourth proportional to 30,112.47, 41,569.66 and 21,167.64 is: 29,221.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,112.47 : 41,569.66 = 21,167.64 : x
  2. Step 2: Convert to fraction form
    30,112.47/41,569.66 = 21,167.64/x
  3. Step 3: Cross multiply
    30,112.47x = 41,569.66 × 21,167.64
  4. Step 4: Simplify right side
    30,112.47x = 879,931,597.80
  5. Step 5: Solve for x
    x = 879,931,597.80/30,112.47
  6. Step 6: Final answer
    x = 29,221.50

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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.