Home / 39,538.65-54,561-21,630.09

Finding the Fourth Proportional to 39,538.65, 54,561 and 21,630.09

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Solution

The fourth proportional to 39,538.65, 54,561 and 21,630.09 is: 29,848.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,538.65 : 54,561 = 21,630.09 : x
  2. Step 2: Convert to fraction form
    39,538.65/54,561 = 21,630.09/x
  3. Step 3: Cross multiply
    39,538.65x = 54,561 × 21,630.09
  4. Step 4: Simplify right side
    39,538.65x = 1,180,159,340.49
  5. Step 5: Solve for x
    x = 1,180,159,340.49/39,538.65
  6. Step 6: Final answer
    x = 29,848.25

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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.