Home / 20,883.96-31,319.25-6,840.18

Finding the Fourth Proportional to 20,883.96, 31,319.25 and 6,840.18

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Solution

The fourth proportional to 20,883.96, 31,319.25 and 6,840.18 is: 10,258.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.96 : 31,319.25 = 6,840.18 : x
  2. Step 2: Convert to fraction form
    20,883.96/31,319.25 = 6,840.18/x
  3. Step 3: Cross multiply
    20,883.96x = 31,319.25 × 6,840.18
  4. Step 4: Simplify right side
    20,883.96x = 214,229,307.47
  5. Step 5: Solve for x
    x = 214,229,307.47/20,883.96
  6. Step 6: Final answer
    x = 10,258.08

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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.