Home / 13,908.88-20,739.23-12,363.40

Finding the Fourth Proportional to 13,908.88, 20,739.23 and 12,363.40

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Solution

The fourth proportional to 13,908.88, 20,739.23 and 12,363.40 is: 18,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.88 : 20,739.23 = 12,363.40 : x
  2. Step 2: Convert to fraction form
    13,908.88/20,739.23 = 12,363.40/x
  3. Step 3: Cross multiply
    13,908.88x = 20,739.23 × 12,363.40
  4. Step 4: Simplify right side
    13,908.88x = 256,407,396.18
  5. Step 5: Solve for x
    x = 256,407,396.18/13,908.88
  6. Step 6: Final answer
    x = 18,434.80

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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.