Home / 15,899.51-21,942.35-9,185.42

Finding the Fourth Proportional to 15,899.51, 21,942.35 and 9,185.42

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Solution

The fourth proportional to 15,899.51, 21,942.35 and 9,185.42 is: 12,676.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,899.51 : 21,942.35 = 9,185.42 : x
  2. Step 2: Convert to fraction form
    15,899.51/21,942.35 = 9,185.42/x
  3. Step 3: Cross multiply
    15,899.51x = 21,942.35 × 9,185.42
  4. Step 4: Simplify right side
    15,899.51x = 201,549,654.61
  5. Step 5: Solve for x
    x = 201,549,654.61/15,899.51
  6. Step 6: Final answer
    x = 12,676.47

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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.