Home / 12,306.84-18,455.70-4,909.08

Finding the Fourth Proportional to 12,306.84, 18,455.70 and 4,909.08

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Solution

The fourth proportional to 12,306.84, 18,455.70 and 4,909.08 is: 7,361.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.84 : 18,455.70 = 4,909.08 : x
  2. Step 2: Convert to fraction form
    12,306.84/18,455.70 = 4,909.08/x
  3. Step 3: Cross multiply
    12,306.84x = 18,455.70 × 4,909.08
  4. Step 4: Simplify right side
    12,306.84x = 90,600,507.76
  5. Step 5: Solve for x
    x = 90,600,507.76/12,306.84
  6. Step 6: Final answer
    x = 7,361.80

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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.