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Finding the Fourth Proportional to 33,780, 46,619.28 and 18,878.88

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Solution

The fourth proportional to 33,780, 46,619.28 and 18,878.88 is: 26,054.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,780 : 46,619.28 = 18,878.88 : x
  2. Step 2: Convert to fraction form
    33,780/46,619.28 = 18,878.88/x
  3. Step 3: Cross multiply
    33,780x = 46,619.28 × 18,878.88
  4. Step 4: Simplify right side
    33,780x = 880,119,792.81
  5. Step 5: Solve for x
    x = 880,119,792.81/33,780
  6. Step 6: Final answer
    x = 26,054.46

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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.