Home / 28,135.37-38,825.38-15,557.69

Finding the Fourth Proportional to 28,135.37, 38,825.38 and 15,557.69

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Solution

The fourth proportional to 28,135.37, 38,825.38 and 15,557.69 is: 21,468.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,135.37 : 38,825.38 = 15,557.69 : x
  2. Step 2: Convert to fraction form
    28,135.37/38,825.38 = 15,557.69/x
  3. Step 3: Cross multiply
    28,135.37x = 38,825.38 × 15,557.69
  4. Step 4: Simplify right side
    28,135.37x = 604,033,226.17
  5. Step 5: Solve for x
    x = 604,033,226.17/28,135.37
  6. Step 6: Final answer
    x = 21,468.82

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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.