Home / 12,558.51-17,317.62-8,078.67

Finding the Fourth Proportional to 12,558.51, 17,317.62 and 8,078.67

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Solution

The fourth proportional to 12,558.51, 17,317.62 and 8,078.67 is: 11,140.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.51 : 17,317.62 = 8,078.67 : x
  2. Step 2: Convert to fraction form
    12,558.51/17,317.62 = 8,078.67/x
  3. Step 3: Cross multiply
    12,558.51x = 17,317.62 × 8,078.67
  4. Step 4: Simplify right side
    12,558.51x = 139,903,337.17
  5. Step 5: Solve for x
    x = 139,903,337.17/12,558.51
  6. Step 6: Final answer
    x = 11,140.12

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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.