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Finding the Fourth Proportional to 28,460.41, 42,584.89 and 17,880.90

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Solution

The fourth proportional to 28,460.41, 42,584.89 and 17,880.90 is: 26,754.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,460.41 : 42,584.89 = 17,880.90 : x
  2. Step 2: Convert to fraction form
    28,460.41/42,584.89 = 17,880.90/x
  3. Step 3: Cross multiply
    28,460.41x = 42,584.89 × 17,880.90
  4. Step 4: Simplify right side
    28,460.41x = 761,456,159.60
  5. Step 5: Solve for x
    x = 761,456,159.60/28,460.41
  6. Step 6: Final answer
    x = 26,754.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.