Home / 13,438.82-18,542.86-7,848.74

Finding the Fourth Proportional to 13,438.82, 18,542.86 and 7,848.74

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Solution

The fourth proportional to 13,438.82, 18,542.86 and 7,848.74 is: 10,829.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.82 : 18,542.86 = 7,848.74 : x
  2. Step 2: Convert to fraction form
    13,438.82/18,542.86 = 7,848.74/x
  3. Step 3: Cross multiply
    13,438.82x = 18,542.86 × 7,848.74
  4. Step 4: Simplify right side
    13,438.82x = 145,537,974.66
  5. Step 5: Solve for x
    x = 145,537,974.66/13,438.82
  6. Step 6: Final answer
    x = 10,829.67

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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.