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Finding the Fourth Proportional to 13,058.52, 18,020.65 and 7,090.06

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Solution

The fourth proportional to 13,058.52, 18,020.65 and 7,090.06 is: 9,784.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,058.52 : 18,020.65 = 7,090.06 : x
  2. Step 2: Convert to fraction form
    13,058.52/18,020.65 = 7,090.06/x
  3. Step 3: Cross multiply
    13,058.52x = 18,020.65 × 7,090.06
  4. Step 4: Simplify right side
    13,058.52x = 127,767,489.74
  5. Step 5: Solve for x
    x = 127,767,489.74/13,058.52
  6. Step 6: Final answer
    x = 9,784.22

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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.