Home / 19,154.61-28,683.84-12,113.39

Finding the Fourth Proportional to 19,154.61, 28,683.84 and 12,113.39

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Solution

The fourth proportional to 19,154.61, 28,683.84 and 12,113.39 is: 18,139.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,154.61 : 28,683.84 = 12,113.39 : x
  2. Step 2: Convert to fraction form
    19,154.61/28,683.84 = 12,113.39/x
  3. Step 3: Cross multiply
    19,154.61x = 28,683.84 × 12,113.39
  4. Step 4: Simplify right side
    19,154.61x = 347,458,397.20
  5. Step 5: Solve for x
    x = 347,458,397.20/19,154.61
  6. Step 6: Final answer
    x = 18,139.67

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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.