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Finding the Fourth Proportional to 18,362.42, 25,339.61 and 10,407.21

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Solution

The fourth proportional to 18,362.42, 25,339.61 and 10,407.21 is: 14,361.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,362.42 : 25,339.61 = 10,407.21 : x
  2. Step 2: Convert to fraction form
    18,362.42/25,339.61 = 10,407.21/x
  3. Step 3: Cross multiply
    18,362.42x = 25,339.61 × 10,407.21
  4. Step 4: Simplify right side
    18,362.42x = 263,714,590.55
  5. Step 5: Solve for x
    x = 263,714,590.55/18,362.42
  6. Step 6: Final answer
    x = 14,361.65

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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.