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Finding the Fourth Proportional to 14,294.73, 19,726.21 and 7,921.60

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Solution

The fourth proportional to 14,294.73, 19,726.21 and 7,921.60 is: 10,931.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,294.73 : 19,726.21 = 7,921.60 : x
  2. Step 2: Convert to fraction form
    14,294.73/19,726.21 = 7,921.60/x
  3. Step 3: Cross multiply
    14,294.73x = 19,726.21 × 7,921.60
  4. Step 4: Simplify right side
    14,294.73x = 156,263,083.44
  5. Step 5: Solve for x
    x = 156,263,083.44/14,294.73
  6. Step 6: Final answer
    x = 10,931.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.