Home / 15,664.08-21,603.85-13,771.62

Finding the Fourth Proportional to 15,664.08, 21,603.85 and 13,771.62

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Solution

The fourth proportional to 15,664.08, 21,603.85 and 13,771.62 is: 18,993.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,664.08 : 21,603.85 = 13,771.62 : x
  2. Step 2: Convert to fraction form
    15,664.08/21,603.85 = 13,771.62/x
  3. Step 3: Cross multiply
    15,664.08x = 21,603.85 × 13,771.62
  4. Step 4: Simplify right side
    15,664.08x = 297,519,978.31
  5. Step 5: Solve for x
    x = 297,519,978.31/15,664.08
  6. Step 6: Final answer
    x = 18,993.77

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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.