Home / 10,622.80-14,656.68-6,643.60

Finding the Fourth Proportional to 10,622.80, 14,656.68 and 6,643.60

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Solution

The fourth proportional to 10,622.80, 14,656.68 and 6,643.60 is: 9,166.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,622.80 : 14,656.68 = 6,643.60 : x
  2. Step 2: Convert to fraction form
    10,622.80/14,656.68 = 6,643.60/x
  3. Step 3: Cross multiply
    10,622.80x = 14,656.68 × 6,643.60
  4. Step 4: Simplify right side
    10,622.80x = 97,373,119.25
  5. Step 5: Solve for x
    x = 97,373,119.25/10,622.80
  6. Step 6: Final answer
    x = 9,166.43

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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.