Home / 39,705.15-54,794.58-21,800.00

Finding the Fourth Proportional to 39,705.15, 54,794.58 and 21,800.00

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Solution

The fourth proportional to 39,705.15, 54,794.58 and 21,800.00 is: 30,084.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,705.15 : 54,794.58 = 21,800.00 : x
  2. Step 2: Convert to fraction form
    39,705.15/54,794.58 = 21,800.00/x
  3. Step 3: Cross multiply
    39,705.15x = 54,794.58 × 21,800.00
  4. Step 4: Simplify right side
    39,705.15x = 1,194,521,899.24
  5. Step 5: Solve for x
    x = 1,194,521,899.24/39,705.15
  6. Step 6: Final answer
    x = 30,084.81

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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.