Home / 31,385.86-43,319.94-17,964.86

Finding the Fourth Proportional to 31,385.86, 43,319.94 and 17,964.86

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Solution

The fourth proportional to 31,385.86, 43,319.94 and 17,964.86 is: 24,795.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,385.86 : 43,319.94 = 17,964.86 : x
  2. Step 2: Convert to fraction form
    31,385.86/43,319.94 = 17,964.86/x
  3. Step 3: Cross multiply
    31,385.86x = 43,319.94 × 17,964.86
  4. Step 4: Simplify right side
    31,385.86x = 778,236,657.31
  5. Step 5: Solve for x
    x = 778,236,657.31/31,385.86
  6. Step 6: Final answer
    x = 24,795.77

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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.