Home / 38,515.68-53,151.03-21,520.26

Finding the Fourth Proportional to 38,515.68, 53,151.03 and 21,520.26

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Solution

The fourth proportional to 38,515.68, 53,151.03 and 21,520.26 is: 29,697.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,515.68 : 53,151.03 = 21,520.26 : x
  2. Step 2: Convert to fraction form
    38,515.68/53,151.03 = 21,520.26/x
  3. Step 3: Cross multiply
    38,515.68x = 53,151.03 × 21,520.26
  4. Step 4: Simplify right side
    38,515.68x = 1,143,823,984.87
  5. Step 5: Solve for x
    x = 1,143,823,984.87/38,515.68
  6. Step 6: Final answer
    x = 29,697.62

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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.