Home / 12,018.66-18,003.50-9,805.38

Finding the Fourth Proportional to 12,018.66, 18,003.50 and 9,805.38

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Solution

The fourth proportional to 12,018.66, 18,003.50 and 9,805.38 is: 14,688.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.66 : 18,003.50 = 9,805.38 : x
  2. Step 2: Convert to fraction form
    12,018.66/18,003.50 = 9,805.38/x
  3. Step 3: Cross multiply
    12,018.66x = 18,003.50 × 9,805.38
  4. Step 4: Simplify right side
    12,018.66x = 176,531,068.81
  5. Step 5: Solve for x
    x = 176,531,068.81/12,018.66
  6. Step 6: Final answer
    x = 14,688.09

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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.