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Finding the Fourth Proportional to 12,699.96, 17,526.10 and 7,395.28

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Solution

The fourth proportional to 12,699.96, 17,526.10 and 7,395.28 is: 10,205.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,699.96 : 17,526.10 = 7,395.28 : x
  2. Step 2: Convert to fraction form
    12,699.96/17,526.10 = 7,395.28/x
  3. Step 3: Cross multiply
    12,699.96x = 17,526.10 × 7,395.28
  4. Step 4: Simplify right side
    12,699.96x = 129,610,416.81
  5. Step 5: Solve for x
    x = 129,610,416.81/12,699.96
  6. Step 6: Final answer
    x = 10,205.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.