Home / 13,058.40-18,020.30-7,090

Finding the Fourth Proportional to 13,058.40, 18,020.30 and 7,090

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Solution

The fourth proportional to 13,058.40, 18,020.30 and 7,090 is: 9,784.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,058.40 : 18,020.30 = 7,090 : x
  2. Step 2: Convert to fraction form
    13,058.40/18,020.30 = 7,090/x
  3. Step 3: Cross multiply
    13,058.40x = 18,020.30 × 7,090
  4. Step 4: Simplify right side
    13,058.40x = 127,763,927
  5. Step 5: Solve for x
    x = 127,763,927/13,058.40
  6. Step 6: Final answer
    x = 9,784.04

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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.