Home / 13,491.24-20,239.98-4,257

Finding the Fourth Proportional to 13,491.24, 20,239.98 and 4,257

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Solution

The fourth proportional to 13,491.24, 20,239.98 and 4,257 is: 6,386.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.24 : 20,239.98 = 4,257 : x
  2. Step 2: Convert to fraction form
    13,491.24/20,239.98 = 4,257/x
  3. Step 3: Cross multiply
    13,491.24x = 20,239.98 × 4,257
  4. Step 4: Simplify right side
    13,491.24x = 86,161,594.86
  5. Step 5: Solve for x
    x = 86,161,594.86/13,491.24
  6. Step 6: Final answer
    x = 6,386.48

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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.