Home / 13,749.07-20,621.02-3,888.28

Finding the Fourth Proportional to 13,749.07, 20,621.02 and 3,888.28

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Solution

The fourth proportional to 13,749.07, 20,621.02 and 3,888.28 is: 5,831.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.07 : 20,621.02 = 3,888.28 : x
  2. Step 2: Convert to fraction form
    13,749.07/20,621.02 = 3,888.28/x
  3. Step 3: Cross multiply
    13,749.07x = 20,621.02 × 3,888.28
  4. Step 4: Simplify right side
    13,749.07x = 80,180,299.65
  5. Step 5: Solve for x
    x = 80,180,299.65/13,749.07
  6. Step 6: Final answer
    x = 5,831.69

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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.