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Finding the Fourth Proportional to 13,085.71, 19,636.88 and 4,764.91

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Solution

The fourth proportional to 13,085.71, 19,636.88 and 4,764.91 is: 7,150.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,085.71 : 19,636.88 = 4,764.91 : x
  2. Step 2: Convert to fraction form
    13,085.71/19,636.88 = 4,764.91/x
  3. Step 3: Cross multiply
    13,085.71x = 19,636.88 × 4,764.91
  4. Step 4: Simplify right side
    13,085.71x = 93,567,965.88
  5. Step 5: Solve for x
    x = 93,567,965.88/13,085.71
  6. Step 6: Final answer
    x = 7,150.39

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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.