Home / 13,580.98-18,740.10-7,611.37

Finding the Fourth Proportional to 13,580.98, 18,740.10 and 7,611.37

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Solution

The fourth proportional to 13,580.98, 18,740.10 and 7,611.37 is: 10,502.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.98 : 18,740.10 = 7,611.37 : x
  2. Step 2: Convert to fraction form
    13,580.98/18,740.10 = 7,611.37/x
  3. Step 3: Cross multiply
    13,580.98x = 18,740.10 × 7,611.37
  4. Step 4: Simplify right side
    13,580.98x = 142,637,834.94
  5. Step 5: Solve for x
    x = 142,637,834.94/13,580.98
  6. Step 6: Final answer
    x = 10,502.76

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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.