Home / 20,597.80-28,448.32-13,871.74

Finding the Fourth Proportional to 20,597.80, 28,448.32 and 13,871.74

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Solution

The fourth proportional to 20,597.80, 28,448.32 and 13,871.74 is: 19,158.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597.80 : 28,448.32 = 13,871.74 : x
  2. Step 2: Convert to fraction form
    20,597.80/28,448.32 = 13,871.74/x
  3. Step 3: Cross multiply
    20,597.80x = 28,448.32 × 13,871.74
  4. Step 4: Simplify right side
    20,597.80x = 394,627,698.48
  5. Step 5: Solve for x
    x = 394,627,698.48/20,597.80
  6. Step 6: Final answer
    x = 19,158.73

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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.