Home / 13,330.74-18,390.33-7,738.50

Finding the Fourth Proportional to 13,330.74, 18,390.33 and 7,738.50

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Solution

The fourth proportional to 13,330.74, 18,390.33 and 7,738.50 is: 10,675.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.74 : 18,390.33 = 7,738.50 : x
  2. Step 2: Convert to fraction form
    13,330.74/18,390.33 = 7,738.50/x
  3. Step 3: Cross multiply
    13,330.74x = 18,390.33 × 7,738.50
  4. Step 4: Simplify right side
    13,330.74x = 142,313,568.71
  5. Step 5: Solve for x
    x = 142,313,568.71/13,330.74
  6. Step 6: Final answer
    x = 10,675.59

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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.