Home / 15,550.93-21,467.82-9,890.02

Finding the Fourth Proportional to 15,550.93, 21,467.82 and 9,890.02

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Solution

The fourth proportional to 15,550.93, 21,467.82 and 9,890.02 is: 13,653.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,550.93 : 21,467.82 = 9,890.02 : x
  2. Step 2: Convert to fraction form
    15,550.93/21,467.82 = 9,890.02/x
  3. Step 3: Cross multiply
    15,550.93x = 21,467.82 × 9,890.02
  4. Step 4: Simplify right side
    15,550.93x = 212,317,169.16
  5. Step 5: Solve for x
    x = 212,317,169.16/15,550.93
  6. Step 6: Final answer
    x = 13,653.02

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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.