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Finding the Fourth Proportional to 19,325.88, 28,987.74 and 6,845.40

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Solution

The fourth proportional to 19,325.88, 28,987.74 and 6,845.40 is: 10,267.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,325.88 : 28,987.74 = 6,845.40 : x
  2. Step 2: Convert to fraction form
    19,325.88/28,987.74 = 6,845.40/x
  3. Step 3: Cross multiply
    19,325.88x = 28,987.74 × 6,845.40
  4. Step 4: Simplify right side
    19,325.88x = 198,432,675.40
  5. Step 5: Solve for x
    x = 198,432,675.40/19,325.88
  6. Step 6: Final answer
    x = 10,267.72

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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.