Home / 13,778.64-19,018.80-13,073.34

Finding the Fourth Proportional to 13,778.64, 19,018.80 and 13,073.34

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Solution

The fourth proportional to 13,778.64, 19,018.80 and 13,073.34 is: 18,045.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.64 : 19,018.80 = 13,073.34 : x
  2. Step 2: Convert to fraction form
    13,778.64/19,018.80 = 13,073.34/x
  3. Step 3: Cross multiply
    13,778.64x = 19,018.80 × 13,073.34
  4. Step 4: Simplify right side
    13,778.64x = 248,639,238.79
  5. Step 5: Solve for x
    x = 248,639,238.79/13,778.64
  6. Step 6: Final answer
    x = 18,045.27

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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.