Home / 15,919.76-21,968.21-8,749.52

Finding the Fourth Proportional to 15,919.76, 21,968.21 and 8,749.52

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Solution

The fourth proportional to 15,919.76, 21,968.21 and 8,749.52 is: 12,073.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,919.76 : 21,968.21 = 8,749.52 : x
  2. Step 2: Convert to fraction form
    15,919.76/21,968.21 = 8,749.52/x
  3. Step 3: Cross multiply
    15,919.76x = 21,968.21 × 8,749.52
  4. Step 4: Simplify right side
    15,919.76x = 192,211,303.93
  5. Step 5: Solve for x
    x = 192,211,303.93/15,919.76
  6. Step 6: Final answer
    x = 12,073.75

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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.