Home / 39,589.56-54,631.26-21,681

Finding the Fourth Proportional to 39,589.56, 54,631.26 and 21,681

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Solution

The fourth proportional to 39,589.56, 54,631.26 and 21,681 is: 29,918.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,589.56 : 54,631.26 = 21,681 : x
  2. Step 2: Convert to fraction form
    39,589.56/54,631.26 = 21,681/x
  3. Step 3: Cross multiply
    39,589.56x = 54,631.26 × 21,681
  4. Step 4: Simplify right side
    39,589.56x = 1,184,460,348.06
  5. Step 5: Solve for x
    x = 1,184,460,348.06/39,589.56
  6. Step 6: Final answer
    x = 29,918.50

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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.