Home / 28,039.76-42,087.69-20,151.53

Finding the Fourth Proportional to 28,039.76, 42,087.69 and 20,151.53

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Solution

The fourth proportional to 28,039.76, 42,087.69 and 20,151.53 is: 30,247.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,039.76 : 42,087.69 = 20,151.53 : x
  2. Step 2: Convert to fraction form
    28,039.76/42,087.69 = 20,151.53/x
  3. Step 3: Cross multiply
    28,039.76x = 42,087.69 × 20,151.53
  4. Step 4: Simplify right side
    28,039.76x = 848,131,347.67
  5. Step 5: Solve for x
    x = 848,131,347.67/28,039.76
  6. Step 6: Final answer
    x = 30,247.45

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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.