Home / 21,055.10-31,580.20-5,473.94

Finding the Fourth Proportional to 21,055.10, 31,580.20 and 5,473.94

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Solution

The fourth proportional to 21,055.10, 31,580.20 and 5,473.94 is: 8,210.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,055.10 : 31,580.20 = 5,473.94 : x
  2. Step 2: Convert to fraction form
    21,055.10/31,580.20 = 5,473.94/x
  3. Step 3: Cross multiply
    21,055.10x = 31,580.20 × 5,473.94
  4. Step 4: Simplify right side
    21,055.10x = 172,868,119.99
  5. Step 5: Solve for x
    x = 172,868,119.99/21,055.10
  6. Step 6: Final answer
    x = 8,210.27

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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.