Home / 14,203.52-21,281.73-8,640.03

Finding the Fourth Proportional to 14,203.52, 21,281.73 and 8,640.03

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Solution

The fourth proportional to 14,203.52, 21,281.73 and 8,640.03 is: 12,945.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,203.52 : 21,281.73 = 8,640.03 : x
  2. Step 2: Convert to fraction form
    14,203.52/21,281.73 = 8,640.03/x
  3. Step 3: Cross multiply
    14,203.52x = 21,281.73 × 8,640.03
  4. Step 4: Simplify right side
    14,203.52x = 183,874,785.65
  5. Step 5: Solve for x
    x = 183,874,785.65/14,203.52
  6. Step 6: Final answer
    x = 12,945.72

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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.