Home / 28,176.16-42,270.64-15,021.60

Finding the Fourth Proportional to 28,176.16, 42,270.64 and 15,021.60

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Solution

The fourth proportional to 28,176.16, 42,270.64 and 15,021.60 is: 22,535.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,176.16 : 42,270.64 = 15,021.60 : x
  2. Step 2: Convert to fraction form
    28,176.16/42,270.64 = 15,021.60/x
  3. Step 3: Cross multiply
    28,176.16x = 42,270.64 × 15,021.60
  4. Step 4: Simplify right side
    28,176.16x = 634,972,645.82
  5. Step 5: Solve for x
    x = 634,972,645.82/28,176.16
  6. Step 6: Final answer
    x = 22,535.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.