Home / 20,621.37-28,442.80-18,925.35

Finding the Fourth Proportional to 20,621.37, 28,442.80 and 18,925.35

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Solution

The fourth proportional to 20,621.37, 28,442.80 and 18,925.35 is: 26,103.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.37 : 28,442.80 = 18,925.35 : x
  2. Step 2: Convert to fraction form
    20,621.37/28,442.80 = 18,925.35/x
  3. Step 3: Cross multiply
    20,621.37x = 28,442.80 × 18,925.35
  4. Step 4: Simplify right side
    20,621.37x = 538,289,944.98
  5. Step 5: Solve for x
    x = 538,289,944.98/20,621.37
  6. Step 6: Final answer
    x = 26,103.50

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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.