Home / 13,512.78-20,237.85-13,045.74

Finding the Fourth Proportional to 13,512.78, 20,237.85 and 13,045.74

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Solution

The fourth proportional to 13,512.78, 20,237.85 and 13,045.74 is: 19,538.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.78 : 20,237.85 = 13,045.74 : x
  2. Step 2: Convert to fraction form
    13,512.78/20,237.85 = 13,045.74/x
  3. Step 3: Cross multiply
    13,512.78x = 20,237.85 × 13,045.74
  4. Step 4: Simplify right side
    13,512.78x = 264,017,729.26
  5. Step 5: Solve for x
    x = 264,017,729.26/13,512.78
  6. Step 6: Final answer
    x = 19,538.37

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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.