Home / 15,999.72-22,085.64-13,752.58

Finding the Fourth Proportional to 15,999.72, 22,085.64 and 13,752.58

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Solution

The fourth proportional to 15,999.72, 22,085.64 and 13,752.58 is: 18,983.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,999.72 : 22,085.64 = 13,752.58 : x
  2. Step 2: Convert to fraction form
    15,999.72/22,085.64 = 13,752.58/x
  3. Step 3: Cross multiply
    15,999.72x = 22,085.64 × 13,752.58
  4. Step 4: Simplify right side
    15,999.72x = 303,734,351.76
  5. Step 5: Solve for x
    x = 303,734,351.76/15,999.72
  6. Step 6: Final answer
    x = 18,983.73

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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.