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Finding the Fourth Proportional to 14,035.50, 21,023.28 and 9,090.45

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Solution

The fourth proportional to 14,035.50, 21,023.28 and 9,090.45 is: 13,616.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,035.50 : 21,023.28 = 9,090.45 : x
  2. Step 2: Convert to fraction form
    14,035.50/21,023.28 = 9,090.45/x
  3. Step 3: Cross multiply
    14,035.50x = 21,023.28 × 9,090.45
  4. Step 4: Simplify right side
    14,035.50x = 191,111,075.68
  5. Step 5: Solve for x
    x = 191,111,075.68/14,035.50
  6. Step 6: Final answer
    x = 13,616.26

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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.