Home / 13,058.40-18,020.34-7,392.72

Finding the Fourth Proportional to 13,058.40, 18,020.34 and 7,392.72

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Solution

The fourth proportional to 13,058.40, 18,020.34 and 7,392.72 is: 10,201.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,058.40 : 18,020.34 = 7,392.72 : x
  2. Step 2: Convert to fraction form
    13,058.40/18,020.34 = 7,392.72/x
  3. Step 3: Cross multiply
    13,058.40x = 18,020.34 × 7,392.72
  4. Step 4: Simplify right side
    13,058.40x = 133,219,327.92
  5. Step 5: Solve for x
    x = 133,219,327.92/13,058.40
  6. Step 6: Final answer
    x = 10,201.81

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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.