Home / 13,953.77-19,257.15-7,666.21

Finding the Fourth Proportional to 13,953.77, 19,257.15 and 7,666.21

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Solution

The fourth proportional to 13,953.77, 19,257.15 and 7,666.21 is: 10,579.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.77 : 19,257.15 = 7,666.21 : x
  2. Step 2: Convert to fraction form
    13,953.77/19,257.15 = 7,666.21/x
  3. Step 3: Cross multiply
    13,953.77x = 19,257.15 × 7,666.21
  4. Step 4: Simplify right side
    13,953.77x = 147,629,355.90
  5. Step 5: Solve for x
    x = 147,629,355.90/13,953.77
  6. Step 6: Final answer
    x = 10,579.89

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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.