Home / 39,139.22-54,012.14-21,234.22

Finding the Fourth Proportional to 39,139.22, 54,012.14 and 21,234.22

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Solution

The fourth proportional to 39,139.22, 54,012.14 and 21,234.22 is: 29,303.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,139.22 : 54,012.14 = 21,234.22 : x
  2. Step 2: Convert to fraction form
    39,139.22/54,012.14 = 21,234.22/x
  3. Step 3: Cross multiply
    39,139.22x = 54,012.14 × 21,234.22
  4. Step 4: Simplify right side
    39,139.22x = 1,146,905,663.43
  5. Step 5: Solve for x
    x = 1,146,905,663.43/39,139.22
  6. Step 6: Final answer
    x = 29,303.23

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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.