Home / 13,290.98-18,340.29-7,626.20

Finding the Fourth Proportional to 13,290.98, 18,340.29 and 7,626.20

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Solution

The fourth proportional to 13,290.98, 18,340.29 and 7,626.20 is: 10,523.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.98 : 18,340.29 = 7,626.20 : x
  2. Step 2: Convert to fraction form
    13,290.98/18,340.29 = 7,626.20/x
  3. Step 3: Cross multiply
    13,290.98x = 18,340.29 × 7,626.20
  4. Step 4: Simplify right side
    13,290.98x = 139,866,627.90
  5. Step 5: Solve for x
    x = 139,866,627.90/13,290.98
  6. Step 6: Final answer
    x = 10,523.42

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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.