Home / 12,740.42-19,110.63-8,356.86

Finding the Fourth Proportional to 12,740.42, 19,110.63 and 8,356.86

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Solution

The fourth proportional to 12,740.42, 19,110.63 and 8,356.86 is: 12,535.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.42 : 19,110.63 = 8,356.86 : x
  2. Step 2: Convert to fraction form
    12,740.42/19,110.63 = 8,356.86/x
  3. Step 3: Cross multiply
    12,740.42x = 19,110.63 × 8,356.86
  4. Step 4: Simplify right side
    12,740.42x = 159,704,817.64
  5. Step 5: Solve for x
    x = 159,704,817.64/12,740.42
  6. Step 6: Final answer
    x = 12,535.29

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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.