Home / 13,738.42-20,574-12,407.22

Finding the Fourth Proportional to 13,738.42, 20,574 and 12,407.22

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Solution

The fourth proportional to 13,738.42, 20,574 and 12,407.22 is: 18,580.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.42 : 20,574 = 12,407.22 : x
  2. Step 2: Convert to fraction form
    13,738.42/20,574 = 12,407.22/x
  3. Step 3: Cross multiply
    13,738.42x = 20,574 × 12,407.22
  4. Step 4: Simplify right side
    13,738.42x = 255,266,144.28
  5. Step 5: Solve for x
    x = 255,266,144.28/13,738.42
  6. Step 6: Final answer
    x = 18,580.46

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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.