Home / 26,940.47-40,431.77-18,678.68

Finding the Fourth Proportional to 26,940.47, 40,431.77 and 18,678.68

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Solution

The fourth proportional to 26,940.47, 40,431.77 and 18,678.68 is: 28,032.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,940.47 : 40,431.77 = 18,678.68 : x
  2. Step 2: Convert to fraction form
    26,940.47/40,431.77 = 18,678.68/x
  3. Step 3: Cross multiply
    26,940.47x = 40,431.77 × 18,678.68
  4. Step 4: Simplify right side
    26,940.47x = 755,211,798.11
  5. Step 5: Solve for x
    x = 755,211,798.11/26,940.47
  6. Step 6: Final answer
    x = 28,032.62

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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.