Home / 13,153.26-19,760.40-12,445.20

Finding the Fourth Proportional to 13,153.26, 19,760.40 and 12,445.20

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Solution

The fourth proportional to 13,153.26, 19,760.40 and 12,445.20 is: 18,696.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.26 : 19,760.40 = 12,445.20 : x
  2. Step 2: Convert to fraction form
    13,153.26/19,760.40 = 12,445.20/x
  3. Step 3: Cross multiply
    13,153.26x = 19,760.40 × 12,445.20
  4. Step 4: Simplify right side
    13,153.26x = 245,922,130.08
  5. Step 5: Solve for x
    x = 245,922,130.08/13,153.26
  6. Step 6: Final answer
    x = 18,696.67

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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.