Home / 20,937.08-31,407.78-6,145.94

Finding the Fourth Proportional to 20,937.08, 31,407.78 and 6,145.94

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Solution

The fourth proportional to 20,937.08, 31,407.78 and 6,145.94 is: 9,219.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.08 : 31,407.78 = 6,145.94 : x
  2. Step 2: Convert to fraction form
    20,937.08/31,407.78 = 6,145.94/x
  3. Step 3: Cross multiply
    20,937.08x = 31,407.78 × 6,145.94
  4. Step 4: Simplify right side
    20,937.08x = 193,030,331.41
  5. Step 5: Solve for x
    x = 193,030,331.41/20,937.08
  6. Step 6: Final answer
    x = 9,219.54

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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.