Home / 12,883.77-19,308.51-8,435.79

Finding the Fourth Proportional to 12,883.77, 19,308.51 and 8,435.79

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Solution

The fourth proportional to 12,883.77, 19,308.51 and 8,435.79 is: 12,642.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,883.77 : 19,308.51 = 8,435.79 : x
  2. Step 2: Convert to fraction form
    12,883.77/19,308.51 = 8,435.79/x
  3. Step 3: Cross multiply
    12,883.77x = 19,308.51 × 8,435.79
  4. Step 4: Simplify right side
    12,883.77x = 162,882,535.57
  5. Step 5: Solve for x
    x = 162,882,535.57/12,883.77
  6. Step 6: Final answer
    x = 12,642.46

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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.