Home / 31,359.75-43,291.18-21,029.09

Finding the Fourth Proportional to 31,359.75, 43,291.18 and 21,029.09

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Solution

The fourth proportional to 31,359.75, 43,291.18 and 21,029.09 is: 29,030.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,359.75 : 43,291.18 = 21,029.09 : x
  2. Step 2: Convert to fraction form
    31,359.75/43,291.18 = 21,029.09/x
  3. Step 3: Cross multiply
    31,359.75x = 43,291.18 × 21,029.09
  4. Step 4: Simplify right side
    31,359.75x = 910,373,989.40
  5. Step 5: Solve for x
    x = 910,373,989.40/31,359.75
  6. Step 6: Final answer
    x = 29,030.01

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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.