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Finding the Fourth Proportional to 18,969.98, 26,158.06 and 12,924.14

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Solution

The fourth proportional to 18,969.98, 26,158.06 and 12,924.14 is: 17,821.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,969.98 : 26,158.06 = 12,924.14 : x
  2. Step 2: Convert to fraction form
    18,969.98/26,158.06 = 12,924.14/x
  3. Step 3: Cross multiply
    18,969.98x = 26,158.06 × 12,924.14
  4. Step 4: Simplify right side
    18,969.98x = 338,070,389.37
  5. Step 5: Solve for x
    x = 338,070,389.37/18,969.98
  6. Step 6: Final answer
    x = 17,821.34

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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.