Home / 12,890.75-19,332.47-4,568.54

Finding the Fourth Proportional to 12,890.75, 19,332.47 and 4,568.54

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Solution

The fourth proportional to 12,890.75, 19,332.47 and 4,568.54 is: 6,851.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.75 : 19,332.47 = 4,568.54 : x
  2. Step 2: Convert to fraction form
    12,890.75/19,332.47 = 4,568.54/x
  3. Step 3: Cross multiply
    12,890.75x = 19,332.47 × 4,568.54
  4. Step 4: Simplify right side
    12,890.75x = 88,321,077.25
  5. Step 5: Solve for x
    x = 88,321,077.25/12,890.75
  6. Step 6: Final answer
    x = 6,851.51

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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.