Home / 12,960.55-19,339.71-11,564.29

Finding the Fourth Proportional to 12,960.55, 19,339.71 and 11,564.29

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Solution

The fourth proportional to 12,960.55, 19,339.71 and 11,564.29 is: 17,256.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,960.55 : 19,339.71 = 11,564.29 : x
  2. Step 2: Convert to fraction form
    12,960.55/19,339.71 = 11,564.29/x
  3. Step 3: Cross multiply
    12,960.55x = 19,339.71 × 11,564.29
  4. Step 4: Simplify right side
    12,960.55x = 223,650,014.96
  5. Step 5: Solve for x
    x = 223,650,014.96/12,960.55
  6. Step 6: Final answer
    x = 17,256.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.