Home / 18,068.78-27,108.51-7,681.34

Finding the Fourth Proportional to 18,068.78, 27,108.51 and 7,681.34

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Solution

The fourth proportional to 18,068.78, 27,108.51 and 7,681.34 is: 11,524.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,068.78 : 27,108.51 = 7,681.34 : x
  2. Step 2: Convert to fraction form
    18,068.78/27,108.51 = 7,681.34/x
  3. Step 3: Cross multiply
    18,068.78x = 27,108.51 × 7,681.34
  4. Step 4: Simplify right side
    18,068.78x = 208,229,682.20
  5. Step 5: Solve for x
    x = 208,229,682.20/18,068.78
  6. Step 6: Final answer
    x = 11,524.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.