Home / 13,128.64-19,705.92-8,450.08

Finding the Fourth Proportional to 13,128.64, 19,705.92 and 8,450.08

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Solution

The fourth proportional to 13,128.64, 19,705.92 and 8,450.08 is: 12,683.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.64 : 19,705.92 = 8,450.08 : x
  2. Step 2: Convert to fraction form
    13,128.64/19,705.92 = 8,450.08/x
  3. Step 3: Cross multiply
    13,128.64x = 19,705.92 × 8,450.08
  4. Step 4: Simplify right side
    13,128.64x = 166,516,600.47
  5. Step 5: Solve for x
    x = 166,516,600.47/13,128.64
  6. Step 6: Final answer
    x = 12,683.46

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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.