Home / 19,664.56-29,477.40-9,137.80

Finding the Fourth Proportional to 19,664.56, 29,477.40 and 9,137.80

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Solution

The fourth proportional to 19,664.56, 29,477.40 and 9,137.80 is: 13,697.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664.56 : 29,477.40 = 9,137.80 : x
  2. Step 2: Convert to fraction form
    19,664.56/29,477.40 = 9,137.80/x
  3. Step 3: Cross multiply
    19,664.56x = 29,477.40 × 9,137.80
  4. Step 4: Simplify right side
    19,664.56x = 269,358,585.72
  5. Step 5: Solve for x
    x = 269,358,585.72/19,664.56
  6. Step 6: Final answer
    x = 13,697.67

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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.