Home / 19,355.09-28,977.89-12,317.67

Finding the Fourth Proportional to 19,355.09, 28,977.89 and 12,317.67

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Solution

The fourth proportional to 19,355.09, 28,977.89 and 12,317.67 is: 18,441.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,355.09 : 28,977.89 = 12,317.67 : x
  2. Step 2: Convert to fraction form
    19,355.09/28,977.89 = 12,317.67/x
  3. Step 3: Cross multiply
    19,355.09x = 28,977.89 × 12,317.67
  4. Step 4: Simplify right side
    19,355.09x = 356,940,024.73
  5. Step 5: Solve for x
    x = 356,940,024.73/19,355.09
  6. Step 6: Final answer
    x = 18,441.67

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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.