Home / 20,867.63-31,303.26-5,285.25

Finding the Fourth Proportional to 20,867.63, 31,303.26 and 5,285.25

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Solution

The fourth proportional to 20,867.63, 31,303.26 and 5,285.25 is: 7,928.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.63 : 31,303.26 = 5,285.25 : x
  2. Step 2: Convert to fraction form
    20,867.63/31,303.26 = 5,285.25/x
  3. Step 3: Cross multiply
    20,867.63x = 31,303.26 × 5,285.25
  4. Step 4: Simplify right side
    20,867.63x = 165,445,554.92
  5. Step 5: Solve for x
    x = 165,445,554.92/20,867.63
  6. Step 6: Final answer
    x = 7,928.34

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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.