Home / 20,190.84-30,290.28-7,710.36

Finding the Fourth Proportional to 20,190.84, 30,290.28 and 7,710.36

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Solution

The fourth proportional to 20,190.84, 30,290.28 and 7,710.36 is: 11,567.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.84 : 30,290.28 = 7,710.36 : x
  2. Step 2: Convert to fraction form
    20,190.84/30,290.28 = 7,710.36/x
  3. Step 3: Cross multiply
    20,190.84x = 30,290.28 × 7,710.36
  4. Step 4: Simplify right side
    20,190.84x = 233,548,963.30
  5. Step 5: Solve for x
    x = 233,548,963.30/20,190.84
  6. Step 6: Final answer
    x = 11,567.08

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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.