Home / 30,145.78-41,621.79-18,832.51

Finding the Fourth Proportional to 30,145.78, 41,621.79 and 18,832.51

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Solution

The fourth proportional to 30,145.78, 41,621.79 and 18,832.51 is: 26,001.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,145.78 : 41,621.79 = 18,832.51 : x
  2. Step 2: Convert to fraction form
    30,145.78/41,621.79 = 18,832.51/x
  3. Step 3: Cross multiply
    30,145.78x = 41,621.79 × 18,832.51
  4. Step 4: Simplify right side
    30,145.78x = 783,842,776.39
  5. Step 5: Solve for x
    x = 783,842,776.39/30,145.78
  6. Step 6: Final answer
    x = 26,001.74

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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.