Home / 14,121.40-19,485.51-8,454.79

Finding the Fourth Proportional to 14,121.40, 19,485.51 and 8,454.79

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Solution

The fourth proportional to 14,121.40, 19,485.51 and 8,454.79 is: 11,666.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.40 : 19,485.51 = 8,454.79 : x
  2. Step 2: Convert to fraction form
    14,121.40/19,485.51 = 8,454.79/x
  3. Step 3: Cross multiply
    14,121.40x = 19,485.51 × 8,454.79
  4. Step 4: Simplify right side
    14,121.40x = 164,745,895.09
  5. Step 5: Solve for x
    x = 164,745,895.09/14,121.40
  6. Step 6: Final answer
    x = 11,666.40

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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.