Home / 39,703.45-54,790.39-21,798.30

Finding the Fourth Proportional to 39,703.45, 54,790.39 and 21,798.30

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Solution

The fourth proportional to 39,703.45, 54,790.39 and 21,798.30 is: 30,081.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,703.45 : 54,790.39 = 21,798.30 : x
  2. Step 2: Convert to fraction form
    39,703.45/54,790.39 = 21,798.30/x
  3. Step 3: Cross multiply
    39,703.45x = 54,790.39 × 21,798.30
  4. Step 4: Simplify right side
    39,703.45x = 1,194,337,358.34
  5. Step 5: Solve for x
    x = 1,194,337,358.34/39,703.45
  6. Step 6: Final answer
    x = 30,081.45

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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.