Home / 14,319.60-21,455.91-13,772.85

Finding the Fourth Proportional to 14,319.60, 21,455.91 and 13,772.85

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Solution

The fourth proportional to 14,319.60, 21,455.91 and 13,772.85 is: 20,636.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,319.60 : 21,455.91 = 13,772.85 : x
  2. Step 2: Convert to fraction form
    14,319.60/21,455.91 = 13,772.85/x
  3. Step 3: Cross multiply
    14,319.60x = 21,455.91 × 13,772.85
  4. Step 4: Simplify right side
    14,319.60x = 295,509,030.04
  5. Step 5: Solve for x
    x = 295,509,030.04/14,319.60
  6. Step 6: Final answer
    x = 20,636.68

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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.