Home / 13,776.56-19,003.12-12,012.40

Finding the Fourth Proportional to 13,776.56, 19,003.12 and 12,012.40

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Solution

The fourth proportional to 13,776.56, 19,003.12 and 12,012.40 is: 16,569.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.56 : 19,003.12 = 12,012.40 : x
  2. Step 2: Convert to fraction form
    13,776.56/19,003.12 = 12,012.40/x
  3. Step 3: Cross multiply
    13,776.56x = 19,003.12 × 12,012.40
  4. Step 4: Simplify right side
    13,776.56x = 228,273,078.69
  5. Step 5: Solve for x
    x = 228,273,078.69/13,776.56
  6. Step 6: Final answer
    x = 16,569.67

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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.