Home / 13,718.35-20,561.12-6,315.36

Finding the Fourth Proportional to 13,718.35, 20,561.12 and 6,315.36

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Solution

The fourth proportional to 13,718.35, 20,561.12 and 6,315.36 is: 9,465.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.35 : 20,561.12 = 6,315.36 : x
  2. Step 2: Convert to fraction form
    13,718.35/20,561.12 = 6,315.36/x
  3. Step 3: Cross multiply
    13,718.35x = 20,561.12 × 6,315.36
  4. Step 4: Simplify right side
    13,718.35x = 129,850,874.80
  5. Step 5: Solve for x
    x = 129,850,874.80/13,718.35
  6. Step 6: Final answer
    x = 9,465.49

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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.