Home / 39,148.30-54,024.18-21,243.16

Finding the Fourth Proportional to 39,148.30, 54,024.18 and 21,243.16

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Solution

The fourth proportional to 39,148.30, 54,024.18 and 21,243.16 is: 29,315.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,148.30 : 54,024.18 = 21,243.16 : x
  2. Step 2: Convert to fraction form
    39,148.30/54,024.18 = 21,243.16/x
  3. Step 3: Cross multiply
    39,148.30x = 54,024.18 × 21,243.16
  4. Step 4: Simplify right side
    39,148.30x = 1,147,644,029.49
  5. Step 5: Solve for x
    x = 1,147,644,029.49/39,148.30
  6. Step 6: Final answer
    x = 29,315.30

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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.