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Finding the Fourth Proportional to 12,459, 17,193.42 and 6,870.36

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Solution

The fourth proportional to 12,459, 17,193.42 and 6,870.36 is: 9,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459 : 17,193.42 = 6,870.36 : x
  2. Step 2: Convert to fraction form
    12,459/17,193.42 = 6,870.36/x
  3. Step 3: Cross multiply
    12,459x = 17,193.42 × 6,870.36
  4. Step 4: Simplify right side
    12,459x = 118,124,985.03
  5. Step 5: Solve for x
    x = 118,124,985.03/12,459
  6. Step 6: Final answer
    x = 9,481.10

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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.