Home / 16,980.16-23,450.40-11,688.64

Finding the Fourth Proportional to 16,980.16, 23,450.40 and 11,688.64

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Solution

The fourth proportional to 16,980.16, 23,450.40 and 11,688.64 is: 16,142.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,980.16 : 23,450.40 = 11,688.64 : x
  2. Step 2: Convert to fraction form
    16,980.16/23,450.40 = 11,688.64/x
  3. Step 3: Cross multiply
    16,980.16x = 23,450.40 × 11,688.64
  4. Step 4: Simplify right side
    16,980.16x = 274,103,283.46
  5. Step 5: Solve for x
    x = 274,103,283.46/16,980.16
  6. Step 6: Final answer
    x = 16,142.56

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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.