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Finding the Fourth Proportional to 19,677.40, 29,472.90 and 17,085.40

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Solution

The fourth proportional to 19,677.40, 29,472.90 and 17,085.40 is: 25,590.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,677.40 : 29,472.90 = 17,085.40 : x
  2. Step 2: Convert to fraction form
    19,677.40/29,472.90 = 17,085.40/x
  3. Step 3: Cross multiply
    19,677.40x = 29,472.90 × 17,085.40
  4. Step 4: Simplify right side
    19,677.40x = 503,556,285.66
  5. Step 5: Solve for x
    x = 503,556,285.66/19,677.40
  6. Step 6: Final answer
    x = 25,590.59

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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.