Home / 19,087.98-26,313.55-13,405.69

Finding the Fourth Proportional to 19,087.98, 26,313.55 and 13,405.69

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Solution

The fourth proportional to 19,087.98, 26,313.55 and 13,405.69 is: 18,480.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,087.98 : 26,313.55 = 13,405.69 : x
  2. Step 2: Convert to fraction form
    19,087.98/26,313.55 = 13,405.69/x
  3. Step 3: Cross multiply
    19,087.98x = 26,313.55 × 13,405.69
  4. Step 4: Simplify right side
    19,087.98x = 352,751,294.10
  5. Step 5: Solve for x
    x = 352,751,294.10/19,087.98
  6. Step 6: Final answer
    x = 18,480.28

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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.