Home / 13,364.64-20,020.80-11,515.68

Finding the Fourth Proportional to 13,364.64, 20,020.80 and 11,515.68

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Solution

The fourth proportional to 13,364.64, 20,020.80 and 11,515.68 is: 17,250.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,364.64 : 20,020.80 = 11,515.68 : x
  2. Step 2: Convert to fraction form
    13,364.64/20,020.80 = 11,515.68/x
  3. Step 3: Cross multiply
    13,364.64x = 20,020.80 × 11,515.68
  4. Step 4: Simplify right side
    13,364.64x = 230,553,126.14
  5. Step 5: Solve for x
    x = 230,553,126.14/13,364.64
  6. Step 6: Final answer
    x = 17,250.98

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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.