Home / 20,840.63-31,260.81-5,258.27

Finding the Fourth Proportional to 20,840.63, 31,260.81 and 5,258.27

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Solution

The fourth proportional to 20,840.63, 31,260.81 and 5,258.27 is: 7,887.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840.63 : 31,260.81 = 5,258.27 : x
  2. Step 2: Convert to fraction form
    20,840.63/31,260.81 = 5,258.27/x
  3. Step 3: Cross multiply
    20,840.63x = 31,260.81 × 5,258.27
  4. Step 4: Simplify right side
    20,840.63x = 164,377,779.40
  5. Step 5: Solve for x
    x = 164,377,779.40/20,840.63
  6. Step 6: Final answer
    x = 7,887.37

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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.