Home / 31,668.86-43,703.70-18,935.21

Finding the Fourth Proportional to 31,668.86, 43,703.70 and 18,935.21

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Solution

The fourth proportional to 31,668.86, 43,703.70 and 18,935.21 is: 26,130.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,668.86 : 43,703.70 = 18,935.21 : x
  2. Step 2: Convert to fraction form
    31,668.86/43,703.70 = 18,935.21/x
  3. Step 3: Cross multiply
    31,668.86x = 43,703.70 × 18,935.21
  4. Step 4: Simplify right side
    31,668.86x = 827,538,737.28
  5. Step 5: Solve for x
    x = 827,538,737.28/31,668.86
  6. Step 6: Final answer
    x = 26,130.99

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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.