Home / 12,729.40-19,076.78-9,606.80

Finding the Fourth Proportional to 12,729.40, 19,076.78 and 9,606.80

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Solution

The fourth proportional to 12,729.40, 19,076.78 and 9,606.80 is: 14,397.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.40 : 19,076.78 = 9,606.80 : x
  2. Step 2: Convert to fraction form
    12,729.40/19,076.78 = 9,606.80/x
  3. Step 3: Cross multiply
    12,729.40x = 19,076.78 × 9,606.80
  4. Step 4: Simplify right side
    12,729.40x = 183,266,881.81
  5. Step 5: Solve for x
    x = 183,266,881.81/12,729.40
  6. Step 6: Final answer
    x = 14,397.14

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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.