Home / 12,485.17-17,224.54-11,121.76

Finding the Fourth Proportional to 12,485.17, 17,224.54 and 11,121.76

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Solution

The fourth proportional to 12,485.17, 17,224.54 and 11,121.76 is: 15,343.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.17 : 17,224.54 = 11,121.76 : x
  2. Step 2: Convert to fraction form
    12,485.17/17,224.54 = 11,121.76/x
  3. Step 3: Cross multiply
    12,485.17x = 17,224.54 × 11,121.76
  4. Step 4: Simplify right side
    12,485.17x = 191,567,199.99
  5. Step 5: Solve for x
    x = 191,567,199.99/12,485.17
  6. Step 6: Final answer
    x = 15,343.58

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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.