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Finding the Fourth Proportional to 12,946, 17,865.48 and 7,058

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Solution

The fourth proportional to 12,946, 17,865.48 and 7,058 is: 9,740.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,946 : 17,865.48 = 7,058 : x
  2. Step 2: Convert to fraction form
    12,946/17,865.48 = 7,058/x
  3. Step 3: Cross multiply
    12,946x = 17,865.48 × 7,058
  4. Step 4: Simplify right side
    12,946x = 126,094,557.84
  5. Step 5: Solve for x
    x = 126,094,557.84/12,946
  6. Step 6: Final answer
    x = 9,740.04

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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.