Home / 19,688.77-27,172.59-12,036.53

Finding the Fourth Proportional to 19,688.77, 27,172.59 and 12,036.53

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Solution

The fourth proportional to 19,688.77, 27,172.59 and 12,036.53 is: 16,611.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,688.77 : 27,172.59 = 12,036.53 : x
  2. Step 2: Convert to fraction form
    19,688.77/27,172.59 = 12,036.53/x
  3. Step 3: Cross multiply
    19,688.77x = 27,172.59 × 12,036.53
  4. Step 4: Simplify right side
    19,688.77x = 327,063,564.66
  5. Step 5: Solve for x
    x = 327,063,564.66/19,688.77
  6. Step 6: Final answer
    x = 16,611.68

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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.