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Finding the Fourth Proportional to 15,074.21, 20,802.46 and 8,360.46

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Solution

The fourth proportional to 15,074.21, 20,802.46 and 8,360.46 is: 11,537.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.21 : 20,802.46 = 8,360.46 : x
  2. Step 2: Convert to fraction form
    15,074.21/20,802.46 = 8,360.46/x
  3. Step 3: Cross multiply
    15,074.21x = 20,802.46 × 8,360.46
  4. Step 4: Simplify right side
    15,074.21x = 173,918,030.72
  5. Step 5: Solve for x
    x = 173,918,030.72/15,074.21
  6. Step 6: Final answer
    x = 11,537.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.