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Finding the Fourth Proportional to 15,807.56, 23,714.94 and 5,418.68

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Solution

The fourth proportional to 15,807.56, 23,714.94 and 5,418.68 is: 8,129.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,807.56 : 23,714.94 = 5,418.68 : x
  2. Step 2: Convert to fraction form
    15,807.56/23,714.94 = 5,418.68/x
  3. Step 3: Cross multiply
    15,807.56x = 23,714.94 × 5,418.68
  4. Step 4: Simplify right side
    15,807.56x = 128,503,671.08
  5. Step 5: Solve for x
    x = 128,503,671.08/15,807.56
  6. Step 6: Final answer
    x = 8,129.25

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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.