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Finding the Fourth Proportional to 39,237, 54,147.60 and 22,470

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Solution

The fourth proportional to 39,237, 54,147.60 and 22,470 is: 31,008.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,237 : 54,147.60 = 22,470 : x
  2. Step 2: Convert to fraction form
    39,237/54,147.60 = 22,470/x
  3. Step 3: Cross multiply
    39,237x = 54,147.60 × 22,470
  4. Step 4: Simplify right side
    39,237x = 1,216,696,572
  5. Step 5: Solve for x
    x = 1,216,696,572/39,237
  6. Step 6: Final answer
    x = 31,008.91

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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.