Home / 12,720.04-17,553.80-7,054.90

Finding the Fourth Proportional to 12,720.04, 17,553.80 and 7,054.90

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Solution

The fourth proportional to 12,720.04, 17,553.80 and 7,054.90 is: 9,735.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.04 : 17,553.80 = 7,054.90 : x
  2. Step 2: Convert to fraction form
    12,720.04/17,553.80 = 7,054.90/x
  3. Step 3: Cross multiply
    12,720.04x = 17,553.80 × 7,054.90
  4. Step 4: Simplify right side
    12,720.04x = 123,840,303.62
  5. Step 5: Solve for x
    x = 123,840,303.62/12,720.04
  6. Step 6: Final answer
    x = 9,735.84

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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.