Home / 12,018.93-18,037.70-7,857.81

Finding the Fourth Proportional to 12,018.93, 18,037.70 and 7,857.81

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Solution

The fourth proportional to 12,018.93, 18,037.70 and 7,857.81 is: 11,792.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.93 : 18,037.70 = 7,857.81 : x
  2. Step 2: Convert to fraction form
    12,018.93/18,037.70 = 7,857.81/x
  3. Step 3: Cross multiply
    12,018.93x = 18,037.70 × 7,857.81
  4. Step 4: Simplify right side
    12,018.93x = 141,736,780.15
  5. Step 5: Solve for x
    x = 141,736,780.15/12,018.93
  6. Step 6: Final answer
    x = 11,792.80

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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.