Home / 12,516.15-18,795.69-11,113.74

Finding the Fourth Proportional to 12,516.15, 18,795.69 and 11,113.74

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Solution

The fourth proportional to 12,516.15, 18,795.69 and 11,113.74 is: 16,689.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.15 : 18,795.69 = 11,113.74 : x
  2. Step 2: Convert to fraction form
    12,516.15/18,795.69 = 11,113.74/x
  3. Step 3: Cross multiply
    12,516.15x = 18,795.69 × 11,113.74
  4. Step 4: Simplify right side
    12,516.15x = 208,890,411.78
  5. Step 5: Solve for x
    x = 208,890,411.78/12,516.15
  6. Step 6: Final answer
    x = 16,689.67

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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.