Home / 26,786.40-40,178.16-12,893.28

Finding the Fourth Proportional to 26,786.40, 40,178.16 and 12,893.28

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Solution

The fourth proportional to 26,786.40, 40,178.16 and 12,893.28 is: 19,339.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,786.40 : 40,178.16 = 12,893.28 : x
  2. Step 2: Convert to fraction form
    26,786.40/40,178.16 = 12,893.28/x
  3. Step 3: Cross multiply
    26,786.40x = 40,178.16 × 12,893.28
  4. Step 4: Simplify right side
    26,786.40x = 518,028,266.76
  5. Step 5: Solve for x
    x = 518,028,266.76/26,786.40
  6. Step 6: Final answer
    x = 19,339.23

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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.