Home / 39,764.64-54,875.22-21,859.50

Finding the Fourth Proportional to 39,764.64, 54,875.22 and 21,859.50

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Solution

The fourth proportional to 39,764.64, 54,875.22 and 21,859.50 is: 30,166.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,764.64 : 54,875.22 = 21,859.50 : x
  2. Step 2: Convert to fraction form
    39,764.64/54,875.22 = 21,859.50/x
  3. Step 3: Cross multiply
    39,764.64x = 54,875.22 × 21,859.50
  4. Step 4: Simplify right side
    39,764.64x = 1,199,544,871.59
  5. Step 5: Solve for x
    x = 1,199,544,871.59/39,764.64
  6. Step 6: Final answer
    x = 30,166.12

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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.