Home / 13,539.62-20,294.85-12,918.86

Finding the Fourth Proportional to 13,539.62, 20,294.85 and 12,918.86

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Solution

The fourth proportional to 13,539.62, 20,294.85 and 12,918.86 is: 19,364.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.62 : 20,294.85 = 12,918.86 : x
  2. Step 2: Convert to fraction form
    13,539.62/20,294.85 = 12,918.86/x
  3. Step 3: Cross multiply
    13,539.62x = 20,294.85 × 12,918.86
  4. Step 4: Simplify right side
    13,539.62x = 262,186,325.87
  5. Step 5: Solve for x
    x = 262,186,325.87/13,539.62
  6. Step 6: Final answer
    x = 19,364.38

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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.