Home / 18,941.58-26,135.40-12,971.07

Finding the Fourth Proportional to 18,941.58, 26,135.40 and 12,971.07

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Solution

The fourth proportional to 18,941.58, 26,135.40 and 12,971.07 is: 17,897.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,941.58 : 26,135.40 = 12,971.07 : x
  2. Step 2: Convert to fraction form
    18,941.58/26,135.40 = 12,971.07/x
  3. Step 3: Cross multiply
    18,941.58x = 26,135.40 × 12,971.07
  4. Step 4: Simplify right side
    18,941.58x = 339,004,102.88
  5. Step 5: Solve for x
    x = 339,004,102.88/18,941.58
  6. Step 6: Final answer
    x = 17,897.35

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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.