Home / 13,751.30-20,619.18-4,389.12

Finding the Fourth Proportional to 13,751.30, 20,619.18 and 4,389.12

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Solution

The fourth proportional to 13,751.30, 20,619.18 and 4,389.12 is: 6,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,751.30 : 20,619.18 = 4,389.12 : x
  2. Step 2: Convert to fraction form
    13,751.30/20,619.18 = 4,389.12/x
  3. Step 3: Cross multiply
    13,751.30x = 20,619.18 × 4,389.12
  4. Step 4: Simplify right side
    13,751.30x = 90,500,055.32
  5. Step 5: Solve for x
    x = 90,500,055.32/13,751.30
  6. Step 6: Final answer
    x = 6,581.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.