Home / 14,455.20-19,950.12-8,489.28

Finding the Fourth Proportional to 14,455.20, 19,950.12 and 8,489.28

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Solution

The fourth proportional to 14,455.20, 19,950.12 and 8,489.28 is: 11,716.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,455.20 : 19,950.12 = 8,489.28 : x
  2. Step 2: Convert to fraction form
    14,455.20/19,950.12 = 8,489.28/x
  3. Step 3: Cross multiply
    14,455.20x = 19,950.12 × 8,489.28
  4. Step 4: Simplify right side
    14,455.20x = 169,362,154.71
  5. Step 5: Solve for x
    x = 169,362,154.71/14,455.20
  6. Step 6: Final answer
    x = 11,716.35

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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.