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Finding the Fourth Proportional to 18,055.31, 24,916.14 and 9,989.33

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Solution

The fourth proportional to 18,055.31, 24,916.14 and 9,989.33 is: 13,785.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,055.31 : 24,916.14 = 9,989.33 : x
  2. Step 2: Convert to fraction form
    18,055.31/24,916.14 = 9,989.33/x
  3. Step 3: Cross multiply
    18,055.31x = 24,916.14 × 9,989.33
  4. Step 4: Simplify right side
    18,055.31x = 248,895,544.79
  5. Step 5: Solve for x
    x = 248,895,544.79/18,055.31
  6. Step 6: Final answer
    x = 13,785.17

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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.