Home / 20,840.54-31,260.85-5,258.16

Finding the Fourth Proportional to 20,840.54, 31,260.85 and 5,258.16

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Solution

The fourth proportional to 20,840.54, 31,260.85 and 5,258.16 is: 7,887.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.54 : 31,260.85 = 5,258.16 : x
  2. Step 2: Convert to fraction form
    20,840.54/31,260.85 = 5,258.16/x
  3. Step 3: Cross multiply
    20,840.54x = 31,260.85 × 5,258.16
  4. Step 4: Simplify right side
    20,840.54x = 164,374,537.89
  5. Step 5: Solve for x
    x = 164,374,537.89/20,840.54
  6. Step 6: Final answer
    x = 7,887.25

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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.