Home / 13,071.54-18,040.26-7,766.40

Finding the Fourth Proportional to 13,071.54, 18,040.26 and 7,766.40

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Solution

The fourth proportional to 13,071.54, 18,040.26 and 7,766.40 is: 10,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,071.54 : 18,040.26 = 7,766.40 : x
  2. Step 2: Convert to fraction form
    13,071.54/18,040.26 = 7,766.40/x
  3. Step 3: Cross multiply
    13,071.54x = 18,040.26 × 7,766.40
  4. Step 4: Simplify right side
    13,071.54x = 140,107,875.26
  5. Step 5: Solve for x
    x = 140,107,875.26/13,071.54
  6. Step 6: Final answer
    x = 10,718.54

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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.