Home / 19,021.72-26,241.10-12,309.50

Finding the Fourth Proportional to 19,021.72, 26,241.10 and 12,309.50

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Solution

The fourth proportional to 19,021.72, 26,241.10 and 12,309.50 is: 16,981.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,021.72 : 26,241.10 = 12,309.50 : x
  2. Step 2: Convert to fraction form
    19,021.72/26,241.10 = 12,309.50/x
  3. Step 3: Cross multiply
    19,021.72x = 26,241.10 × 12,309.50
  4. Step 4: Simplify right side
    19,021.72x = 323,014,820.45
  5. Step 5: Solve for x
    x = 323,014,820.45/19,021.72
  6. Step 6: Final answer
    x = 16,981.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.