Home / 19,403.60-29,083.80-8,308.40

Finding the Fourth Proportional to 19,403.60, 29,083.80 and 8,308.40

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Solution

The fourth proportional to 19,403.60, 29,083.80 and 8,308.40 is: 12,453.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,403.60 : 29,083.80 = 8,308.40 : x
  2. Step 2: Convert to fraction form
    19,403.60/29,083.80 = 8,308.40/x
  3. Step 3: Cross multiply
    19,403.60x = 29,083.80 × 8,308.40
  4. Step 4: Simplify right side
    19,403.60x = 241,639,843.92
  5. Step 5: Solve for x
    x = 241,639,843.92/19,403.60
  6. Step 6: Final answer
    x = 12,453.35

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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.