Home / 39,699.07-54,781.59-21,794.02

Finding the Fourth Proportional to 39,699.07, 54,781.59 and 21,794.02

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Solution

The fourth proportional to 39,699.07, 54,781.59 and 21,794.02 is: 30,074.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,699.07 : 54,781.59 = 21,794.02 : x
  2. Step 2: Convert to fraction form
    39,699.07/54,781.59 = 21,794.02/x
  3. Step 3: Cross multiply
    39,699.07x = 54,781.59 × 21,794.02
  4. Step 4: Simplify right side
    39,699.07x = 1,193,911,068.09
  5. Step 5: Solve for x
    x = 1,193,911,068.09/39,699.07
  6. Step 6: Final answer
    x = 30,074.03

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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.