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Finding the Fourth Proportional to 14,328.80, 21,495.88 and 4,968.40

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Solution

The fourth proportional to 14,328.80, 21,495.88 and 4,968.40 is: 7,453.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,328.80 : 21,495.88 = 4,968.40 : x
  2. Step 2: Convert to fraction form
    14,328.80/21,495.88 = 4,968.40/x
  3. Step 3: Cross multiply
    14,328.80x = 21,495.88 × 4,968.40
  4. Step 4: Simplify right side
    14,328.80x = 106,800,130.19
  5. Step 5: Solve for x
    x = 106,800,130.19/14,328.80
  6. Step 6: Final answer
    x = 7,453.53

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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.