Home / 31,730.01-43,798.78-21,651.24

Finding the Fourth Proportional to 31,730.01, 43,798.78 and 21,651.24

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Solution

The fourth proportional to 31,730.01, 43,798.78 and 21,651.24 is: 29,886.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,730.01 : 43,798.78 = 21,651.24 : x
  2. Step 2: Convert to fraction form
    31,730.01/43,798.78 = 21,651.24/x
  3. Step 3: Cross multiply
    31,730.01x = 43,798.78 × 21,651.24
  4. Step 4: Simplify right side
    31,730.01x = 948,297,936.21
  5. Step 5: Solve for x
    x = 948,297,936.21/31,730.01
  6. Step 6: Final answer
    x = 29,886.47

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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.