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Finding the Fourth Proportional to 19,583.73, 29,386.88 and 8,491.55

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Solution

The fourth proportional to 19,583.73, 29,386.88 and 8,491.55 is: 12,742.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,583.73 : 29,386.88 = 8,491.55 : x
  2. Step 2: Convert to fraction form
    19,583.73/29,386.88 = 8,491.55/x
  3. Step 3: Cross multiply
    19,583.73x = 29,386.88 × 8,491.55
  4. Step 4: Simplify right side
    19,583.73x = 249,539,971.47
  5. Step 5: Solve for x
    x = 249,539,971.47/19,583.73
  6. Step 6: Final answer
    x = 12,742.21

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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.