Home / 13,707.48-20,561.24-8,779.44

Finding the Fourth Proportional to 13,707.48, 20,561.24 and 8,779.44

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Solution

The fourth proportional to 13,707.48, 20,561.24 and 8,779.44 is: 13,169.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.48 : 20,561.24 = 8,779.44 : x
  2. Step 2: Convert to fraction form
    13,707.48/20,561.24 = 8,779.44/x
  3. Step 3: Cross multiply
    13,707.48x = 20,561.24 × 8,779.44
  4. Step 4: Simplify right side
    13,707.48x = 180,516,172.91
  5. Step 5: Solve for x
    x = 180,516,172.91/13,707.48
  6. Step 6: Final answer
    x = 13,169.17

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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.