Home / 28,041.78-42,090.70-20,153.54

Finding the Fourth Proportional to 28,041.78, 42,090.70 and 20,153.54

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Solution

The fourth proportional to 28,041.78, 42,090.70 and 20,153.54 is: 30,250.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,041.78 : 42,090.70 = 20,153.54 : x
  2. Step 2: Convert to fraction form
    28,041.78/42,090.70 = 20,153.54/x
  3. Step 3: Cross multiply
    28,041.78x = 42,090.70 × 20,153.54
  4. Step 4: Simplify right side
    28,041.78x = 848,276,606.08
  5. Step 5: Solve for x
    x = 848,276,606.08/28,041.78
  6. Step 6: Final answer
    x = 30,250.46

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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.