Home / 13,065.26-18,020.13-9,038.79

Finding the Fourth Proportional to 13,065.26, 18,020.13 and 9,038.79

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Solution

The fourth proportional to 13,065.26, 18,020.13 and 9,038.79 is: 12,466.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,065.26 : 18,020.13 = 9,038.79 : x
  2. Step 2: Convert to fraction form
    13,065.26/18,020.13 = 9,038.79/x
  3. Step 3: Cross multiply
    13,065.26x = 18,020.13 × 9,038.79
  4. Step 4: Simplify right side
    13,065.26x = 162,880,221.54
  5. Step 5: Solve for x
    x = 162,880,221.54/13,065.26
  6. Step 6: Final answer
    x = 12,466.66

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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.