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Finding the Fourth Proportional to 18,879.40, 26,051.70 and 14,406.04

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Solution

The fourth proportional to 18,879.40, 26,051.70 and 14,406.04 is: 19,878.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.40 : 26,051.70 = 14,406.04 : x
  2. Step 2: Convert to fraction form
    18,879.40/26,051.70 = 14,406.04/x
  3. Step 3: Cross multiply
    18,879.40x = 26,051.70 × 14,406.04
  4. Step 4: Simplify right side
    18,879.40x = 375,301,832.27
  5. Step 5: Solve for x
    x = 375,301,832.27/18,879.40
  6. Step 6: Final answer
    x = 19,878.91

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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.