Home / 38,427.68-53,028.30-21,433.76

Finding the Fourth Proportional to 38,427.68, 53,028.30 and 21,433.76

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Solution

The fourth proportional to 38,427.68, 53,028.30 and 21,433.76 is: 29,577.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,427.68 : 53,028.30 = 21,433.76 : x
  2. Step 2: Convert to fraction form
    38,427.68/53,028.30 = 21,433.76/x
  3. Step 3: Cross multiply
    38,427.68x = 53,028.30 × 21,433.76
  4. Step 4: Simplify right side
    38,427.68x = 1,136,595,855.41
  5. Step 5: Solve for x
    x = 1,136,595,855.41/38,427.68
  6. Step 6: Final answer
    x = 29,577.53

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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.