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Finding the Fourth Proportional to 14,328.90, 21,493.35 and 7,308.90

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Solution

The fourth proportional to 14,328.90, 21,493.35 and 7,308.90 is: 10,963.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,328.90 : 21,493.35 = 7,308.90 : x
  2. Step 2: Convert to fraction form
    14,328.90/21,493.35 = 7,308.90/x
  3. Step 3: Cross multiply
    14,328.90x = 21,493.35 × 7,308.90
  4. Step 4: Simplify right side
    14,328.90x = 157,092,745.82
  5. Step 5: Solve for x
    x = 157,092,745.82/14,328.90
  6. Step 6: Final answer
    x = 10,963.35

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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.