Home / 15,867.78-23,817.68-6,987.06

Finding the Fourth Proportional to 15,867.78, 23,817.68 and 6,987.06

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Solution

The fourth proportional to 15,867.78, 23,817.68 and 6,987.06 is: 10,487.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,867.78 : 23,817.68 = 6,987.06 : x
  2. Step 2: Convert to fraction form
    15,867.78/23,817.68 = 6,987.06/x
  3. Step 3: Cross multiply
    15,867.78x = 23,817.68 × 6,987.06
  4. Step 4: Simplify right side
    15,867.78x = 166,415,524.29
  5. Step 5: Solve for x
    x = 166,415,524.29/15,867.78
  6. Step 6: Final answer
    x = 10,487.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.