Home / 16,421.90-22,662.42-9,348.32

Finding the Fourth Proportional to 16,421.90, 22,662.42 and 9,348.32

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Solution

The fourth proportional to 16,421.90, 22,662.42 and 9,348.32 is: 12,900.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,421.90 : 22,662.42 = 9,348.32 : x
  2. Step 2: Convert to fraction form
    16,421.90/22,662.42 = 9,348.32/x
  3. Step 3: Cross multiply
    16,421.90x = 22,662.42 × 9,348.32
  4. Step 4: Simplify right side
    16,421.90x = 211,855,554.13
  5. Step 5: Solve for x
    x = 211,855,554.13/16,421.90
  6. Step 6: Final answer
    x = 12,900.79

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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.