Home / 13,225.54-19,838.21-12,455.23

Finding the Fourth Proportional to 13,225.54, 19,838.21 and 12,455.23

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Solution

The fourth proportional to 13,225.54, 19,838.21 and 12,455.23 is: 18,682.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,225.54 : 19,838.21 = 12,455.23 : x
  2. Step 2: Convert to fraction form
    13,225.54/19,838.21 = 12,455.23/x
  3. Step 3: Cross multiply
    13,225.54x = 19,838.21 × 12,455.23
  4. Step 4: Simplify right side
    13,225.54x = 247,089,468.34
  5. Step 5: Solve for x
    x = 247,089,468.34/13,225.54
  6. Step 6: Final answer
    x = 18,682.75

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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.