Home / 28,267.51-39,009-15,520.93

Finding the Fourth Proportional to 28,267.51, 39,009 and 15,520.93

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Solution

The fourth proportional to 28,267.51, 39,009 and 15,520.93 is: 21,418.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,267.51 : 39,009 = 15,520.93 : x
  2. Step 2: Convert to fraction form
    28,267.51/39,009 = 15,520.93/x
  3. Step 3: Cross multiply
    28,267.51x = 39,009 × 15,520.93
  4. Step 4: Simplify right side
    28,267.51x = 605,455,958.37
  5. Step 5: Solve for x
    x = 605,455,958.37/28,267.51
  6. Step 6: Final answer
    x = 21,418.79

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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.