Home / 39,759.64-54,868.32-21,854.50

Finding the Fourth Proportional to 39,759.64, 54,868.32 and 21,854.50

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Solution

The fourth proportional to 39,759.64, 54,868.32 and 21,854.50 is: 30,159.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,759.64 : 54,868.32 = 21,854.50 : x
  2. Step 2: Convert to fraction form
    39,759.64/54,868.32 = 21,854.50/x
  3. Step 3: Cross multiply
    39,759.64x = 54,868.32 × 21,854.50
  4. Step 4: Simplify right side
    39,759.64x = 1,199,119,699.44
  5. Step 5: Solve for x
    x = 1,199,119,699.44/39,759.64
  6. Step 6: Final answer
    x = 30,159.22

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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.