Home / 20,598.37-28,416.69-13,881.55

Finding the Fourth Proportional to 20,598.37, 28,416.69 and 13,881.55

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Solution

The fourth proportional to 20,598.37, 28,416.69 and 13,881.55 is: 19,150.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,598.37 : 28,416.69 = 13,881.55 : x
  2. Step 2: Convert to fraction form
    20,598.37/28,416.69 = 13,881.55/x
  3. Step 3: Cross multiply
    20,598.37x = 28,416.69 × 13,881.55
  4. Step 4: Simplify right side
    20,598.37x = 394,467,703.07
  5. Step 5: Solve for x
    x = 394,467,703.07/20,598.37
  6. Step 6: Final answer
    x = 19,150.43

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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.