Home / 16,890.12-23,308.32-9,438.12

Finding the Fourth Proportional to 16,890.12, 23,308.32 and 9,438.12

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Solution

The fourth proportional to 16,890.12, 23,308.32 and 9,438.12 is: 13,024.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,890.12 : 23,308.32 = 9,438.12 : x
  2. Step 2: Convert to fraction form
    16,890.12/23,308.32 = 9,438.12/x
  3. Step 3: Cross multiply
    16,890.12x = 23,308.32 × 9,438.12
  4. Step 4: Simplify right side
    16,890.12x = 219,986,721.16
  5. Step 5: Solve for x
    x = 219,986,721.16/16,890.12
  6. Step 6: Final answer
    x = 13,024.58

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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.