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Finding the Fourth Proportional to 18,970.69, 26,188.41 and 11,011.38

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Solution

The fourth proportional to 18,970.69, 26,188.41 and 11,011.38 is: 15,200.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.69 : 26,188.41 = 11,011.38 : x
  2. Step 2: Convert to fraction form
    18,970.69/26,188.41 = 11,011.38/x
  3. Step 3: Cross multiply
    18,970.69x = 26,188.41 × 11,011.38
  4. Step 4: Simplify right side
    18,970.69x = 288,370,415.25
  5. Step 5: Solve for x
    x = 288,370,415.25/18,970.69
  6. Step 6: Final answer
    x = 15,200.84

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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.