Home / 31,749.07-43,813.38-18,320.17

Finding the Fourth Proportional to 31,749.07, 43,813.38 and 18,320.17

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Solution

The fourth proportional to 31,749.07, 43,813.38 and 18,320.17 is: 25,281.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,749.07 : 43,813.38 = 18,320.17 : x
  2. Step 2: Convert to fraction form
    31,749.07/43,813.38 = 18,320.17/x
  3. Step 3: Cross multiply
    31,749.07x = 43,813.38 × 18,320.17
  4. Step 4: Simplify right side
    31,749.07x = 802,668,569.87
  5. Step 5: Solve for x
    x = 802,668,569.87/31,749.07
  6. Step 6: Final answer
    x = 25,281.64

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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.