Home / 28,065.89-38,730.35-15,319.33

Finding the Fourth Proportional to 28,065.89, 38,730.35 and 15,319.33

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Solution

The fourth proportional to 28,065.89, 38,730.35 and 15,319.33 is: 21,140.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,065.89 : 38,730.35 = 15,319.33 : x
  2. Step 2: Convert to fraction form
    28,065.89/38,730.35 = 15,319.33/x
  3. Step 3: Cross multiply
    28,065.89x = 38,730.35 × 15,319.33
  4. Step 4: Simplify right side
    28,065.89x = 593,322,954.14
  5. Step 5: Solve for x
    x = 593,322,954.14/28,065.89
  6. Step 6: Final answer
    x = 21,140.36

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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.