Home / 28,462.32-39,278.52-15,886.80

Finding the Fourth Proportional to 28,462.32, 39,278.52 and 15,886.80

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Solution

The fourth proportional to 28,462.32, 39,278.52 and 15,886.80 is: 21,924.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,462.32 : 39,278.52 = 15,886.80 : x
  2. Step 2: Convert to fraction form
    28,462.32/39,278.52 = 15,886.80/x
  3. Step 3: Cross multiply
    28,462.32x = 39,278.52 × 15,886.80
  4. Step 4: Simplify right side
    28,462.32x = 624,009,991.54
  5. Step 5: Solve for x
    x = 624,009,991.54/28,462.32
  6. Step 6: Final answer
    x = 21,924.07

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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.