Home / 13,620.42-20,419.77-12,526.98

Finding the Fourth Proportional to 13,620.42, 20,419.77 and 12,526.98

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Solution

The fourth proportional to 13,620.42, 20,419.77 and 12,526.98 is: 18,780.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.42 : 20,419.77 = 12,526.98 : x
  2. Step 2: Convert to fraction form
    13,620.42/20,419.77 = 12,526.98/x
  3. Step 3: Cross multiply
    13,620.42x = 20,419.77 × 12,526.98
  4. Step 4: Simplify right side
    13,620.42x = 255,798,050.39
  5. Step 5: Solve for x
    x = 255,798,050.39/13,620.42
  6. Step 6: Final answer
    x = 18,780.48

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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.