Home / 43,220.38-64,830.58-13,640.52

Finding the Fourth Proportional to 43,220.38, 64,830.58 and 13,640.52

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Solution

The fourth proportional to 43,220.38, 64,830.58 and 13,640.52 is: 20,460.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,220.38 : 64,830.58 = 13,640.52 : x
  2. Step 2: Convert to fraction form
    43,220.38/64,830.58 = 13,640.52/x
  3. Step 3: Cross multiply
    43,220.38x = 64,830.58 × 13,640.52
  4. Step 4: Simplify right side
    43,220.38x = 884,322,823.10
  5. Step 5: Solve for x
    x = 884,322,823.10/43,220.38
  6. Step 6: Final answer
    x = 20,460.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.