Home / 39,618.72-54,674.10-21,714.12

Finding the Fourth Proportional to 39,618.72, 54,674.10 and 21,714.12

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Solution

The fourth proportional to 39,618.72, 54,674.10 and 21,714.12 is: 29,965.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,618.72 : 54,674.10 = 21,714.12 : x
  2. Step 2: Convert to fraction form
    39,618.72/54,674.10 = 21,714.12/x
  3. Step 3: Cross multiply
    39,618.72x = 54,674.10 × 21,714.12
  4. Step 4: Simplify right side
    39,618.72x = 1,187,199,968.29
  5. Step 5: Solve for x
    x = 1,187,199,968.29/39,618.72
  6. Step 6: Final answer
    x = 29,965.63

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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.