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Finding the Fourth Proportional to 21,041.51, 31,556.86 and 6,246.99

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Solution

The fourth proportional to 21,041.51, 31,556.86 and 6,246.99 is: 9,368.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.51 : 31,556.86 = 6,246.99 : x
  2. Step 2: Convert to fraction form
    21,041.51/31,556.86 = 6,246.99/x
  3. Step 3: Cross multiply
    21,041.51x = 31,556.86 × 6,246.99
  4. Step 4: Simplify right side
    21,041.51x = 197,135,373.23
  5. Step 5: Solve for x
    x = 197,135,373.23/21,041.51
  6. Step 6: Final answer
    x = 9,368.88

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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.