Home / 39,519.36-54,538.08-21,615.48

Finding the Fourth Proportional to 39,519.36, 54,538.08 and 21,615.48

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Solution

The fourth proportional to 39,519.36, 54,538.08 and 21,615.48 is: 29,830.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,519.36 : 54,538.08 = 21,615.48 : x
  2. Step 2: Convert to fraction form
    39,519.36/54,538.08 = 21,615.48/x
  3. Step 3: Cross multiply
    39,519.36x = 54,538.08 × 21,615.48
  4. Step 4: Simplify right side
    39,519.36x = 1,178,866,777.48
  5. Step 5: Solve for x
    x = 1,178,866,777.48/39,519.36
  6. Step 6: Final answer
    x = 29,830.11

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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.