Home / 37,985.21-52,418.86-20,989.09

Finding the Fourth Proportional to 37,985.21, 52,418.86 and 20,989.09

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Solution

The fourth proportional to 37,985.21, 52,418.86 and 20,989.09 is: 28,964.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,985.21 : 52,418.86 = 20,989.09 : x
  2. Step 2: Convert to fraction form
    37,985.21/52,418.86 = 20,989.09/x
  3. Step 3: Cross multiply
    37,985.21x = 52,418.86 × 20,989.09
  4. Step 4: Simplify right side
    37,985.21x = 1,100,223,908.14
  5. Step 5: Solve for x
    x = 1,100,223,908.14/37,985.21
  6. Step 6: Final answer
    x = 28,964.54

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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.