Home / 39,322.85-54,266.16-21,418.20

Finding the Fourth Proportional to 39,322.85, 54,266.16 and 21,418.20

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Solution

The fourth proportional to 39,322.85, 54,266.16 and 21,418.20 is: 29,557.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,322.85 : 54,266.16 = 21,418.20 : x
  2. Step 2: Convert to fraction form
    39,322.85/54,266.16 = 21,418.20/x
  3. Step 3: Cross multiply
    39,322.85x = 54,266.16 × 21,418.20
  4. Step 4: Simplify right side
    39,322.85x = 1,162,283,468.11
  5. Step 5: Solve for x
    x = 1,162,283,468.11/39,322.85
  6. Step 6: Final answer
    x = 29,557.46

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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.