Home / 13,649.16-20,477.88-6,718.80

Finding the Fourth Proportional to 13,649.16, 20,477.88 and 6,718.80

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Solution

The fourth proportional to 13,649.16, 20,477.88 and 6,718.80 is: 10,080.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,649.16 : 20,477.88 = 6,718.80 : x
  2. Step 2: Convert to fraction form
    13,649.16/20,477.88 = 6,718.80/x
  3. Step 3: Cross multiply
    13,649.16x = 20,477.88 × 6,718.80
  4. Step 4: Simplify right side
    13,649.16x = 137,586,780.14
  5. Step 5: Solve for x
    x = 137,586,780.14/13,649.16
  6. Step 6: Final answer
    x = 10,080.24

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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.