Home / 16,985.45-23,439.49-9,431.54

Finding the Fourth Proportional to 16,985.45, 23,439.49 and 9,431.54

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Solution

The fourth proportional to 16,985.45, 23,439.49 and 9,431.54 is: 13,015.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,985.45 : 23,439.49 = 9,431.54 : x
  2. Step 2: Convert to fraction form
    16,985.45/23,439.49 = 9,431.54/x
  3. Step 3: Cross multiply
    16,985.45x = 23,439.49 × 9,431.54
  4. Step 4: Simplify right side
    16,985.45x = 221,070,487.51
  5. Step 5: Solve for x
    x = 221,070,487.51/16,985.45
  6. Step 6: Final answer
    x = 13,015.29

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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.