Home / 31,356.72-43,257.65-19,415.70

Finding the Fourth Proportional to 31,356.72, 43,257.65 and 19,415.70

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Solution

The fourth proportional to 31,356.72, 43,257.65 and 19,415.70 is: 26,784.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,356.72 : 43,257.65 = 19,415.70 : x
  2. Step 2: Convert to fraction form
    31,356.72/43,257.65 = 19,415.70/x
  3. Step 3: Cross multiply
    31,356.72x = 43,257.65 × 19,415.70
  4. Step 4: Simplify right side
    31,356.72x = 839,877,458.03
  5. Step 5: Solve for x
    x = 839,877,458.03/31,356.72
  6. Step 6: Final answer
    x = 26,784.61

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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.