Home / 38,421.08-57,628.38-21,728.60

Finding the Fourth Proportional to 38,421.08, 57,628.38 and 21,728.60

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Solution

The fourth proportional to 38,421.08, 57,628.38 and 21,728.60 is: 32,591.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421.08 : 57,628.38 = 21,728.60 : x
  2. Step 2: Convert to fraction form
    38,421.08/57,628.38 = 21,728.60/x
  3. Step 3: Cross multiply
    38,421.08x = 57,628.38 × 21,728.60
  4. Step 4: Simplify right side
    38,421.08x = 1,252,184,216.06
  5. Step 5: Solve for x
    x = 1,252,184,216.06/38,421.08
  6. Step 6: Final answer
    x = 32,591.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.