Home / 39,785.99-54,903.57-21,881.00

Finding the Fourth Proportional to 39,785.99, 54,903.57 and 21,881.00

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Solution

The fourth proportional to 39,785.99, 54,903.57 and 21,881.00 is: 30,195.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,785.99 : 54,903.57 = 21,881.00 : x
  2. Step 2: Convert to fraction form
    39,785.99/54,903.57 = 21,881.00/x
  3. Step 3: Cross multiply
    39,785.99x = 54,903.57 × 21,881.00
  4. Step 4: Simplify right side
    39,785.99x = 1,201,344,740.65
  5. Step 5: Solve for x
    x = 1,201,344,740.65/39,785.99
  6. Step 6: Final answer
    x = 30,195.17

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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.