Home / 13,953.96-19,255.77-7,666.56

Finding the Fourth Proportional to 13,953.96, 19,255.77 and 7,666.56

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Solution

The fourth proportional to 13,953.96, 19,255.77 and 7,666.56 is: 10,579.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.96 : 19,255.77 = 7,666.56 : x
  2. Step 2: Convert to fraction form
    13,953.96/19,255.77 = 7,666.56/x
  3. Step 3: Cross multiply
    13,953.96x = 19,255.77 × 7,666.56
  4. Step 4: Simplify right side
    13,953.96x = 147,625,516.05
  5. Step 5: Solve for x
    x = 147,625,516.05/13,953.96
  6. Step 6: Final answer
    x = 10,579.47

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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.