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Finding the Fourth Proportional to 19,157.58, 26,436.78 and 11,205

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Solution

The fourth proportional to 19,157.58, 26,436.78 and 11,205 is: 15,462.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157.58 : 26,436.78 = 11,205 : x
  2. Step 2: Convert to fraction form
    19,157.58/26,436.78 = 11,205/x
  3. Step 3: Cross multiply
    19,157.58x = 26,436.78 × 11,205
  4. Step 4: Simplify right side
    19,157.58x = 296,224,119.90
  5. Step 5: Solve for x
    x = 296,224,119.90/19,157.58
  6. Step 6: Final answer
    x = 15,462.50

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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.