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Finding the Fourth Proportional to 18,955.08, 26,169.06 and 12,590.28

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Solution

The fourth proportional to 18,955.08, 26,169.06 and 12,590.28 is: 17,381.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,955.08 : 26,169.06 = 12,590.28 : x
  2. Step 2: Convert to fraction form
    18,955.08/26,169.06 = 12,590.28/x
  3. Step 3: Cross multiply
    18,955.08x = 26,169.06 × 12,590.28
  4. Step 4: Simplify right side
    18,955.08x = 329,475,792.74
  5. Step 5: Solve for x
    x = 329,475,792.74/18,955.08
  6. Step 6: Final answer
    x = 17,381.93

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.