Home / 13,776.36-19,011.38-7,488.73

Finding the Fourth Proportional to 13,776.36, 19,011.38 and 7,488.73

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Solution

The fourth proportional to 13,776.36, 19,011.38 and 7,488.73 is: 10,334.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.36 : 19,011.38 = 7,488.73 : x
  2. Step 2: Convert to fraction form
    13,776.36/19,011.38 = 7,488.73/x
  3. Step 3: Cross multiply
    13,776.36x = 19,011.38 × 7,488.73
  4. Step 4: Simplify right side
    13,776.36x = 142,371,091.75
  5. Step 5: Solve for x
    x = 142,371,091.75/13,776.36
  6. Step 6: Final answer
    x = 10,334.45

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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.