Home / 31,518.45-43,502.87-19,590.80

Finding the Fourth Proportional to 31,518.45, 43,502.87 and 19,590.80

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Solution

The fourth proportional to 31,518.45, 43,502.87 and 19,590.80 is: 27,039.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,518.45 : 43,502.87 = 19,590.80 : x
  2. Step 2: Convert to fraction form
    31,518.45/43,502.87 = 19,590.80/x
  3. Step 3: Cross multiply
    31,518.45x = 43,502.87 × 19,590.80
  4. Step 4: Simplify right side
    31,518.45x = 852,255,857.06
  5. Step 5: Solve for x
    x = 852,255,857.06/31,518.45
  6. Step 6: Final answer
    x = 27,039.90

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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.