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Finding the Fourth Proportional to 12,477.18, 17,220.06 and 7,999.29

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Solution

The fourth proportional to 12,477.18, 17,220.06 and 7,999.29 is: 11,040.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,477.18 : 17,220.06 = 7,999.29 : x
  2. Step 2: Convert to fraction form
    12,477.18/17,220.06 = 7,999.29/x
  3. Step 3: Cross multiply
    12,477.18x = 17,220.06 × 7,999.29
  4. Step 4: Simplify right side
    12,477.18x = 137,748,343.28
  5. Step 5: Solve for x
    x = 137,748,343.28/12,477.18
  6. Step 6: Final answer
    x = 11,040.03

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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.