Home / 12,579.02-17,357.72-7,275.54

Finding the Fourth Proportional to 12,579.02, 17,357.72 and 7,275.54

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Solution

The fourth proportional to 12,579.02, 17,357.72 and 7,275.54 is: 10,039.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.02 : 17,357.72 = 7,275.54 : x
  2. Step 2: Convert to fraction form
    12,579.02/17,357.72 = 7,275.54/x
  3. Step 3: Cross multiply
    12,579.02x = 17,357.72 × 7,275.54
  4. Step 4: Simplify right side
    12,579.02x = 126,286,749.79
  5. Step 5: Solve for x
    x = 126,286,749.79/12,579.02
  6. Step 6: Final answer
    x = 10,039.48

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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.