Home / 34,287.37-47,321.61-20,856.03

Finding the Fourth Proportional to 34,287.37, 47,321.61 and 20,856.03

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Solution

The fourth proportional to 34,287.37, 47,321.61 and 20,856.03 is: 28,784.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,287.37 : 47,321.61 = 20,856.03 : x
  2. Step 2: Convert to fraction form
    34,287.37/47,321.61 = 20,856.03/x
  3. Step 3: Cross multiply
    34,287.37x = 47,321.61 × 20,856.03
  4. Step 4: Simplify right side
    34,287.37x = 986,940,681.20
  5. Step 5: Solve for x
    x = 986,940,681.20/34,287.37
  6. Step 6: Final answer
    x = 28,784.38

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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.