Home / 28,155.42-38,852.73-15,580.44

Finding the Fourth Proportional to 28,155.42, 38,852.73 and 15,580.44

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Solution

The fourth proportional to 28,155.42, 38,852.73 and 15,580.44 is: 21,500.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155.42 : 38,852.73 = 15,580.44 : x
  2. Step 2: Convert to fraction form
    28,155.42/38,852.73 = 15,580.44/x
  3. Step 3: Cross multiply
    28,155.42x = 38,852.73 × 15,580.44
  4. Step 4: Simplify right side
    28,155.42x = 605,342,628.60
  5. Step 5: Solve for x
    x = 605,342,628.60/28,155.42
  6. Step 6: Final answer
    x = 21,500.04

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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.