Home / 14,340.80-21,511.20-13,217.60

Finding the Fourth Proportional to 14,340.80, 21,511.20 and 13,217.60

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Solution

The fourth proportional to 14,340.80, 21,511.20 and 13,217.60 is: 19,826.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,340.80 : 21,511.20 = 13,217.60 : x
  2. Step 2: Convert to fraction form
    14,340.80/21,511.20 = 13,217.60/x
  3. Step 3: Cross multiply
    14,340.80x = 21,511.20 × 13,217.60
  4. Step 4: Simplify right side
    14,340.80x = 284,326,437.12
  5. Step 5: Solve for x
    x = 284,326,437.12/14,340.80
  6. Step 6: Final answer
    x = 19,826.40

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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.