Home / 39,719.12-54,813.34-21,570.60

Finding the Fourth Proportional to 39,719.12, 54,813.34 and 21,570.60

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Solution

The fourth proportional to 39,719.12, 54,813.34 and 21,570.60 is: 29,767.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,719.12 : 54,813.34 = 21,570.60 : x
  2. Step 2: Convert to fraction form
    39,719.12/54,813.34 = 21,570.60/x
  3. Step 3: Cross multiply
    39,719.12x = 54,813.34 × 21,570.60
  4. Step 4: Simplify right side
    39,719.12x = 1,182,356,631.80
  5. Step 5: Solve for x
    x = 1,182,356,631.80/39,719.12
  6. Step 6: Final answer
    x = 29,767.95

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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.