Home / 18,881.78-26,038.77-12,498.26

Finding the Fourth Proportional to 18,881.78, 26,038.77 and 12,498.26

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Solution

The fourth proportional to 18,881.78, 26,038.77 and 12,498.26 is: 17,235.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,881.78 : 26,038.77 = 12,498.26 : x
  2. Step 2: Convert to fraction form
    18,881.78/26,038.77 = 12,498.26/x
  3. Step 3: Cross multiply
    18,881.78x = 26,038.77 × 12,498.26
  4. Step 4: Simplify right side
    18,881.78x = 325,439,317.54
  5. Step 5: Solve for x
    x = 325,439,317.54/18,881.78
  6. Step 6: Final answer
    x = 17,235.63

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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.