Home / 31,391.86-43,328.24-17,970.88

Finding the Fourth Proportional to 31,391.86, 43,328.24 and 17,970.88

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Solution

The fourth proportional to 31,391.86, 43,328.24 and 17,970.88 is: 24,804.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391.86 : 43,328.24 = 17,970.88 : x
  2. Step 2: Convert to fraction form
    31,391.86/43,328.24 = 17,970.88/x
  3. Step 3: Cross multiply
    31,391.86x = 43,328.24 × 17,970.88
  4. Step 4: Simplify right side
    31,391.86x = 778,646,601.65
  5. Step 5: Solve for x
    x = 778,646,601.65/31,391.86
  6. Step 6: Final answer
    x = 24,804.09

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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.