Home / 28,321.84-39,085.56-15,746.32

Finding the Fourth Proportional to 28,321.84, 39,085.56 and 15,746.32

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Solution

The fourth proportional to 28,321.84, 39,085.56 and 15,746.32 is: 21,730.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,321.84 : 39,085.56 = 15,746.32 : x
  2. Step 2: Convert to fraction form
    28,321.84/39,085.56 = 15,746.32/x
  3. Step 3: Cross multiply
    28,321.84x = 39,085.56 × 15,746.32
  4. Step 4: Simplify right side
    28,321.84x = 615,453,735.14
  5. Step 5: Solve for x
    x = 615,453,735.14/28,321.84
  6. Step 6: Final answer
    x = 21,730.71

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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.