Home / 13,888.92-19,166.49-7,920.67

Finding the Fourth Proportional to 13,888.92, 19,166.49 and 7,920.67

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Solution

The fourth proportional to 13,888.92, 19,166.49 and 7,920.67 is: 10,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.92 : 19,166.49 = 7,920.67 : x
  2. Step 2: Convert to fraction form
    13,888.92/19,166.49 = 7,920.67/x
  3. Step 3: Cross multiply
    13,888.92x = 19,166.49 × 7,920.67
  4. Step 4: Simplify right side
    13,888.92x = 151,811,442.35
  5. Step 5: Solve for x
    x = 151,811,442.35/13,888.92
  6. Step 6: Final answer
    x = 10,930.40

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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.