Home / 38,418.30-53,017.52-21,423.60

Finding the Fourth Proportional to 38,418.30, 53,017.52 and 21,423.60

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Solution

The fourth proportional to 38,418.30, 53,017.52 and 21,423.60 is: 29,564.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,418.30 : 53,017.52 = 21,423.60 : x
  2. Step 2: Convert to fraction form
    38,418.30/53,017.52 = 21,423.60/x
  3. Step 3: Cross multiply
    38,418.30x = 53,017.52 × 21,423.60
  4. Step 4: Simplify right side
    38,418.30x = 1,135,826,034.35
  5. Step 5: Solve for x
    x = 1,135,826,034.35/38,418.30
  6. Step 6: Final answer
    x = 29,564.71

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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.