Home / 20,846.54-28,772.67-13,291.13

Finding the Fourth Proportional to 20,846.54, 28,772.67 and 13,291.13

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Solution

The fourth proportional to 20,846.54, 28,772.67 and 13,291.13 is: 18,344.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,846.54 : 28,772.67 = 13,291.13 : x
  2. Step 2: Convert to fraction form
    20,846.54/28,772.67 = 13,291.13/x
  3. Step 3: Cross multiply
    20,846.54x = 28,772.67 × 13,291.13
  4. Step 4: Simplify right side
    20,846.54x = 382,421,153.55
  5. Step 5: Solve for x
    x = 382,421,153.55/20,846.54
  6. Step 6: Final answer
    x = 18,344.59

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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.