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Finding the Fourth Proportional to 15,073.53, 20,802.74 and 8,786.31

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Solution

The fourth proportional to 15,073.53, 20,802.74 and 8,786.31 is: 12,125.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,073.53 : 20,802.74 = 8,786.31 : x
  2. Step 2: Convert to fraction form
    15,073.53/20,802.74 = 8,786.31/x
  3. Step 3: Cross multiply
    15,073.53x = 20,802.74 × 8,786.31
  4. Step 4: Simplify right side
    15,073.53x = 182,779,278.56
  5. Step 5: Solve for x
    x = 182,779,278.56/15,073.53
  6. Step 6: Final answer
    x = 12,125.84

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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.