Home / 12,809.36-19,207.40-4,909.55

Finding the Fourth Proportional to 12,809.36, 19,207.40 and 4,909.55

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Solution

The fourth proportional to 12,809.36, 19,207.40 and 4,909.55 is: 7,361.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.36 : 19,207.40 = 4,909.55 : x
  2. Step 2: Convert to fraction form
    12,809.36/19,207.40 = 4,909.55/x
  3. Step 3: Cross multiply
    12,809.36x = 19,207.40 × 4,909.55
  4. Step 4: Simplify right side
    12,809.36x = 94,299,570.09
  5. Step 5: Solve for x
    x = 94,299,570.09/12,809.36
  6. Step 6: Final answer
    x = 7,361.77

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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.