Home / 12,739.34-17,579.70-7,074.45

Finding the Fourth Proportional to 12,739.34, 17,579.70 and 7,074.45

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Solution

The fourth proportional to 12,739.34, 17,579.70 and 7,074.45 is: 9,762.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.34 : 17,579.70 = 7,074.45 : x
  2. Step 2: Convert to fraction form
    12,739.34/17,579.70 = 7,074.45/x
  3. Step 3: Cross multiply
    12,739.34x = 17,579.70 × 7,074.45
  4. Step 4: Simplify right side
    12,739.34x = 124,366,748.31
  5. Step 5: Solve for x
    x = 124,366,748.31/12,739.34
  6. Step 6: Final answer
    x = 9,762.42

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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.