Home / 14,259.87-19,687.86-12,765.20

Finding the Fourth Proportional to 14,259.87, 19,687.86 and 12,765.20

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Solution

The fourth proportional to 14,259.87, 19,687.86 and 12,765.20 is: 17,624.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,259.87 : 19,687.86 = 12,765.20 : x
  2. Step 2: Convert to fraction form
    14,259.87/19,687.86 = 12,765.20/x
  3. Step 3: Cross multiply
    14,259.87x = 19,687.86 × 12,765.20
  4. Step 4: Simplify right side
    14,259.87x = 251,319,372.03
  5. Step 5: Solve for x
    x = 251,319,372.03/14,259.87
  6. Step 6: Final answer
    x = 17,624.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.