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Finding the Fourth Proportional to 19,152.61, 28,790.42 and 17,782.99

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Solution

The fourth proportional to 19,152.61, 28,790.42 and 17,782.99 is: 26,731.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,152.61 : 28,790.42 = 17,782.99 : x
  2. Step 2: Convert to fraction form
    19,152.61/28,790.42 = 17,782.99/x
  3. Step 3: Cross multiply
    19,152.61x = 28,790.42 × 17,782.99
  4. Step 4: Simplify right side
    19,152.61x = 511,979,590.06
  5. Step 5: Solve for x
    x = 511,979,590.06/19,152.61
  6. Step 6: Final answer
    x = 26,731.59

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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.