Home / 31,470.04-43,435.38-21,415.24

Finding the Fourth Proportional to 31,470.04, 43,435.38 and 21,415.24

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Solution

The fourth proportional to 31,470.04, 43,435.38 and 21,415.24 is: 29,557.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,470.04 : 43,435.38 = 21,415.24 : x
  2. Step 2: Convert to fraction form
    31,470.04/43,435.38 = 21,415.24/x
  3. Step 3: Cross multiply
    31,470.04x = 43,435.38 × 21,415.24
  4. Step 4: Simplify right side
    31,470.04x = 930,179,087.19
  5. Step 5: Solve for x
    x = 930,179,087.19/31,470.04
  6. Step 6: Final answer
    x = 29,557.61

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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.