Home / 14,769.88-20,389.26-9,105.64

Finding the Fourth Proportional to 14,769.88, 20,389.26 and 9,105.64

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Solution

The fourth proportional to 14,769.88, 20,389.26 and 9,105.64 is: 12,569.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,769.88 : 20,389.26 = 9,105.64 : x
  2. Step 2: Convert to fraction form
    14,769.88/20,389.26 = 9,105.64/x
  3. Step 3: Cross multiply
    14,769.88x = 20,389.26 × 9,105.64
  4. Step 4: Simplify right side
    14,769.88x = 185,657,261.43
  5. Step 5: Solve for x
    x = 185,657,261.43/14,769.88
  6. Step 6: Final answer
    x = 12,569.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.