Home / 13,678.47-18,885.36-12,736.59

Finding the Fourth Proportional to 13,678.47, 18,885.36 and 12,736.59

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Solution

The fourth proportional to 13,678.47, 18,885.36 and 12,736.59 is: 17,584.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.47 : 18,885.36 = 12,736.59 : x
  2. Step 2: Convert to fraction form
    13,678.47/18,885.36 = 12,736.59/x
  3. Step 3: Cross multiply
    13,678.47x = 18,885.36 × 12,736.59
  4. Step 4: Simplify right side
    13,678.47x = 240,535,087.32
  5. Step 5: Solve for x
    x = 240,535,087.32/13,678.47
  6. Step 6: Final answer
    x = 17,584.94

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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.