Home / 21,055.60-31,580.95-5,474.44

Finding the Fourth Proportional to 21,055.60, 31,580.95 and 5,474.44

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Solution

The fourth proportional to 21,055.60, 31,580.95 and 5,474.44 is: 8,211.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,055.60 : 31,580.95 = 5,474.44 : x
  2. Step 2: Convert to fraction form
    21,055.60/31,580.95 = 5,474.44/x
  3. Step 3: Cross multiply
    21,055.60x = 31,580.95 × 5,474.44
  4. Step 4: Simplify right side
    21,055.60x = 172,888,015.92
  5. Step 5: Solve for x
    x = 172,888,015.92/21,055.60
  6. Step 6: Final answer
    x = 8,211.02

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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.