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Finding the Fourth Proportional to 19,357.48, 26,849.95 and 18,845.20

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Solution

The fourth proportional to 19,357.48, 26,849.95 and 18,845.20 is: 26,139.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,357.48 : 26,849.95 = 18,845.20 : x
  2. Step 2: Convert to fraction form
    19,357.48/26,849.95 = 18,845.20/x
  3. Step 3: Cross multiply
    19,357.48x = 26,849.95 × 18,845.20
  4. Step 4: Simplify right side
    19,357.48x = 505,992,677.74
  5. Step 5: Solve for x
    x = 505,992,677.74/19,357.48
  6. Step 6: Final answer
    x = 26,139.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.