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Finding the Fourth Proportional to 14,490.48, 21,742.62 and 7,090.89

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Solution

The fourth proportional to 14,490.48, 21,742.62 and 7,090.89 is: 10,639.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,490.48 : 21,742.62 = 7,090.89 : x
  2. Step 2: Convert to fraction form
    14,490.48/21,742.62 = 7,090.89/x
  3. Step 3: Cross multiply
    14,490.48x = 21,742.62 × 7,090.89
  4. Step 4: Simplify right side
    14,490.48x = 154,174,526.73
  5. Step 5: Solve for x
    x = 154,174,526.73/14,490.48
  6. Step 6: Final answer
    x = 10,639.71

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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.