Home / 13,909.37-20,739.98-12,363.89

Finding the Fourth Proportional to 13,909.37, 20,739.98 and 12,363.89

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Solution

The fourth proportional to 13,909.37, 20,739.98 and 12,363.89 is: 18,435.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.37 : 20,739.98 = 12,363.89 : x
  2. Step 2: Convert to fraction form
    13,909.37/20,739.98 = 12,363.89/x
  3. Step 3: Cross multiply
    13,909.37x = 20,739.98 × 12,363.89
  4. Step 4: Simplify right side
    13,909.37x = 256,426,758.53
  5. Step 5: Solve for x
    x = 256,426,758.53/13,909.37
  6. Step 6: Final answer
    x = 18,435.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.