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Finding the Fourth Proportional to 19,267.88, 28,950.54 and 18,490.28

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Solution

The fourth proportional to 19,267.88, 28,950.54 and 18,490.28 is: 27,782.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,267.88 : 28,950.54 = 18,490.28 : x
  2. Step 2: Convert to fraction form
    19,267.88/28,950.54 = 18,490.28/x
  3. Step 3: Cross multiply
    19,267.88x = 28,950.54 × 18,490.28
  4. Step 4: Simplify right side
    19,267.88x = 535,303,590.75
  5. Step 5: Solve for x
    x = 535,303,590.75/19,267.88
  6. Step 6: Final answer
    x = 27,782.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.