Home / 15,124.32-20,868.48-8,749.44

Finding the Fourth Proportional to 15,124.32, 20,868.48 and 8,749.44

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Solution

The fourth proportional to 15,124.32, 20,868.48 and 8,749.44 is: 12,072.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,124.32 : 20,868.48 = 8,749.44 : x
  2. Step 2: Convert to fraction form
    15,124.32/20,868.48 = 8,749.44/x
  3. Step 3: Cross multiply
    15,124.32x = 20,868.48 × 8,749.44
  4. Step 4: Simplify right side
    15,124.32x = 182,587,513.65
  5. Step 5: Solve for x
    x = 182,587,513.65/15,124.32
  6. Step 6: Final answer
    x = 12,072.44

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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.