Home / 13,776.39-19,011.48-7,488.75

Finding the Fourth Proportional to 13,776.39, 19,011.48 and 7,488.75

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Solution

The fourth proportional to 13,776.39, 19,011.48 and 7,488.75 is: 10,334.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.39 : 19,011.48 = 7,488.75 : x
  2. Step 2: Convert to fraction form
    13,776.39/19,011.48 = 7,488.75/x
  3. Step 3: Cross multiply
    13,776.39x = 19,011.48 × 7,488.75
  4. Step 4: Simplify right side
    13,776.39x = 142,372,220.85
  5. Step 5: Solve for x
    x = 142,372,220.85/13,776.39
  6. Step 6: Final answer
    x = 10,334.51

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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.