Home / 13,058.10-18,020.13-7,089.71

Finding the Fourth Proportional to 13,058.10, 18,020.13 and 7,089.71

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Solution

The fourth proportional to 13,058.10, 18,020.13 and 7,089.71 is: 9,783.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,058.10 : 18,020.13 = 7,089.71 : x
  2. Step 2: Convert to fraction form
    13,058.10/18,020.13 = 7,089.71/x
  3. Step 3: Cross multiply
    13,058.10x = 18,020.13 × 7,089.71
  4. Step 4: Simplify right side
    13,058.10x = 127,757,405.76
  5. Step 5: Solve for x
    x = 127,757,405.76/13,058.10
  6. Step 6: Final answer
    x = 9,783.77

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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.