Home / 28,979.04-40,003.35-18,916.11

Finding the Fourth Proportional to 28,979.04, 40,003.35 and 18,916.11

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Solution

The fourth proportional to 28,979.04, 40,003.35 and 18,916.11 is: 26,112.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979.04 : 40,003.35 = 18,916.11 : x
  2. Step 2: Convert to fraction form
    28,979.04/40,003.35 = 18,916.11/x
  3. Step 3: Cross multiply
    28,979.04x = 40,003.35 × 18,916.11
  4. Step 4: Simplify right side
    28,979.04x = 756,707,768.97
  5. Step 5: Solve for x
    x = 756,707,768.97/28,979.04
  6. Step 6: Final answer
    x = 26,112.24

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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.