Home / 30,529.31-42,144.88-20,464.33

Finding the Fourth Proportional to 30,529.31, 42,144.88 and 20,464.33

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Solution

The fourth proportional to 30,529.31, 42,144.88 and 20,464.33 is: 28,250.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,529.31 : 42,144.88 = 20,464.33 : x
  2. Step 2: Convert to fraction form
    30,529.31/42,144.88 = 20,464.33/x
  3. Step 3: Cross multiply
    30,529.31x = 42,144.88 × 20,464.33
  4. Step 4: Simplify right side
    30,529.31x = 862,466,750.56
  5. Step 5: Solve for x
    x = 862,466,750.56/30,529.31
  6. Step 6: Final answer
    x = 28,250.45

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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.