Home / 13,698.39-18,875.90-9,450.75

Finding the Fourth Proportional to 13,698.39, 18,875.90 and 9,450.75

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Solution

The fourth proportional to 13,698.39, 18,875.90 and 9,450.75 is: 13,022.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698.39 : 18,875.90 = 9,450.75 : x
  2. Step 2: Convert to fraction form
    13,698.39/18,875.90 = 9,450.75/x
  3. Step 3: Cross multiply
    13,698.39x = 18,875.90 × 9,450.75
  4. Step 4: Simplify right side
    13,698.39x = 178,391,364.67
  5. Step 5: Solve for x
    x = 178,391,364.67/13,698.39
  6. Step 6: Final answer
    x = 13,022.80

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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.