Home / 13,215.15-19,894.61-11,407.23

Finding the Fourth Proportional to 13,215.15, 19,894.61 and 11,407.23

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Solution

The fourth proportional to 13,215.15, 19,894.61 and 11,407.23 is: 17,172.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.15 : 19,894.61 = 11,407.23 : x
  2. Step 2: Convert to fraction form
    13,215.15/19,894.61 = 11,407.23/x
  3. Step 3: Cross multiply
    13,215.15x = 19,894.61 × 11,407.23
  4. Step 4: Simplify right side
    13,215.15x = 226,942,420.55
  5. Step 5: Solve for x
    x = 226,942,420.55/13,215.15
  6. Step 6: Final answer
    x = 17,172.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.