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Finding the Fourth Proportional to 20,904.26, 31,356.48 and 7,062.98

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Solution

The fourth proportional to 20,904.26, 31,356.48 and 7,062.98 is: 10,594.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.26 : 31,356.48 = 7,062.98 : x
  2. Step 2: Convert to fraction form
    20,904.26/31,356.48 = 7,062.98/x
  3. Step 3: Cross multiply
    20,904.26x = 31,356.48 × 7,062.98
  4. Step 4: Simplify right side
    20,904.26x = 221,470,191.11
  5. Step 5: Solve for x
    x = 221,470,191.11/20,904.26
  6. Step 6: Final answer
    x = 10,594.50

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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.