Home / 13,106.80-18,074.10-9,328.96

Finding the Fourth Proportional to 13,106.80, 18,074.10 and 9,328.96

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Solution

The fourth proportional to 13,106.80, 18,074.10 and 9,328.96 is: 12,864.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,106.80 : 18,074.10 = 9,328.96 : x
  2. Step 2: Convert to fraction form
    13,106.80/18,074.10 = 9,328.96/x
  3. Step 3: Cross multiply
    13,106.80x = 18,074.10 × 9,328.96
  4. Step 4: Simplify right side
    13,106.80x = 168,612,555.94
  5. Step 5: Solve for x
    x = 168,612,555.94/13,106.80
  6. Step 6: Final answer
    x = 12,864.51

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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.