Home / 11,720.16-16,173.54-6,415.20

Finding the Fourth Proportional to 11,720.16, 16,173.54 and 6,415.20

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Solution

The fourth proportional to 11,720.16, 16,173.54 and 6,415.20 is: 8,852.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.16 : 16,173.54 = 6,415.20 : x
  2. Step 2: Convert to fraction form
    11,720.16/16,173.54 = 6,415.20/x
  3. Step 3: Cross multiply
    11,720.16x = 16,173.54 × 6,415.20
  4. Step 4: Simplify right side
    11,720.16x = 103,756,493.81
  5. Step 5: Solve for x
    x = 103,756,493.81/11,720.16
  6. Step 6: Final answer
    x = 8,852.82

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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.