Home / 13,486.72-18,611.70-7,437.64

Finding the Fourth Proportional to 13,486.72, 18,611.70 and 7,437.64

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Solution

The fourth proportional to 13,486.72, 18,611.70 and 7,437.64 is: 10,263.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.72 : 18,611.70 = 7,437.64 : x
  2. Step 2: Convert to fraction form
    13,486.72/18,611.70 = 7,437.64/x
  3. Step 3: Cross multiply
    13,486.72x = 18,611.70 × 7,437.64
  4. Step 4: Simplify right side
    13,486.72x = 138,427,124.39
  5. Step 5: Solve for x
    x = 138,427,124.39/13,486.72
  6. Step 6: Final answer
    x = 10,263.96

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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.