Home / 13,320.88-18,381.82-7,655.64

Finding the Fourth Proportional to 13,320.88, 18,381.82 and 7,655.64

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Solution

The fourth proportional to 13,320.88, 18,381.82 and 7,655.64 is: 10,564.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.88 : 18,381.82 = 7,655.64 : x
  2. Step 2: Convert to fraction form
    13,320.88/18,381.82 = 7,655.64/x
  3. Step 3: Cross multiply
    13,320.88x = 18,381.82 × 7,655.64
  4. Step 4: Simplify right side
    13,320.88x = 140,724,596.46
  5. Step 5: Solve for x
    x = 140,724,596.46/13,320.88
  6. Step 6: Final answer
    x = 10,564.21

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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.