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Finding the Fourth Proportional to 28,460.30, 42,700.06 and 17,918.04

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Solution

The fourth proportional to 28,460.30, 42,700.06 and 17,918.04 is: 26,883.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,460.30 : 42,700.06 = 17,918.04 : x
  2. Step 2: Convert to fraction form
    28,460.30/42,700.06 = 17,918.04/x
  3. Step 3: Cross multiply
    28,460.30x = 42,700.06 × 17,918.04
  4. Step 4: Simplify right side
    28,460.30x = 765,101,383.08
  5. Step 5: Solve for x
    x = 765,101,383.08/28,460.30
  6. Step 6: Final answer
    x = 26,883.11

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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.