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Finding the Fourth Proportional to 14,460.85, 21,675.08 and 7,438.15

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Solution

The fourth proportional to 14,460.85, 21,675.08 and 7,438.15 is: 11,148.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,460.85 : 21,675.08 = 7,438.15 : x
  2. Step 2: Convert to fraction form
    14,460.85/21,675.08 = 7,438.15/x
  3. Step 3: Cross multiply
    14,460.85x = 21,675.08 × 7,438.15
  4. Step 4: Simplify right side
    14,460.85x = 161,222,459.11
  5. Step 5: Solve for x
    x = 161,222,459.11/14,460.85
  6. Step 6: Final answer
    x = 11,148.89

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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.