Home / 13,953.78-19,255.56-7,666.02

Finding the Fourth Proportional to 13,953.78, 19,255.56 and 7,666.02

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Solution

The fourth proportional to 13,953.78, 19,255.56 and 7,666.02 is: 10,578.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.78 : 19,255.56 = 7,666.02 : x
  2. Step 2: Convert to fraction form
    13,953.78/19,255.56 = 7,666.02/x
  3. Step 3: Cross multiply
    13,953.78x = 19,255.56 × 7,666.02
  4. Step 4: Simplify right side
    13,953.78x = 147,613,508.07
  5. Step 5: Solve for x
    x = 147,613,508.07/13,953.78
  6. Step 6: Final answer
    x = 10,578.75

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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.