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Finding the Fourth Proportional to 12,860.88, 19,275.38 and 7,590.54

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Solution

The fourth proportional to 12,860.88, 19,275.38 and 7,590.54 is: 11,376.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,860.88 : 19,275.38 = 7,590.54 : x
  2. Step 2: Convert to fraction form
    12,860.88/19,275.38 = 7,590.54/x
  3. Step 3: Cross multiply
    12,860.88x = 19,275.38 × 7,590.54
  4. Step 4: Simplify right side
    12,860.88x = 146,310,542.91
  5. Step 5: Solve for x
    x = 146,310,542.91/12,860.88
  6. Step 6: Final answer
    x = 11,376.40

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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.