Home / 28,357.43-39,134.54-15,782.99

Finding the Fourth Proportional to 28,357.43, 39,134.54 and 15,782.99

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Solution

The fourth proportional to 28,357.43, 39,134.54 and 15,782.99 is: 21,781.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.43 : 39,134.54 = 15,782.99 : x
  2. Step 2: Convert to fraction form
    28,357.43/39,134.54 = 15,782.99/x
  3. Step 3: Cross multiply
    28,357.43x = 39,134.54 × 15,782.99
  4. Step 4: Simplify right side
    28,357.43x = 617,659,897.26
  5. Step 5: Solve for x
    x = 617,659,897.26/28,357.43
  6. Step 6: Final answer
    x = 21,781.24

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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.