Home / 14,240.80-21,364.40-8,394.40

Finding the Fourth Proportional to 14,240.80, 21,364.40 and 8,394.40

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Solution

The fourth proportional to 14,240.80, 21,364.40 and 8,394.40 is: 12,593.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,240.80 : 21,364.40 = 8,394.40 : x
  2. Step 2: Convert to fraction form
    14,240.80/21,364.40 = 8,394.40/x
  3. Step 3: Cross multiply
    14,240.80x = 21,364.40 × 8,394.40
  4. Step 4: Simplify right side
    14,240.80x = 179,341,319.36
  5. Step 5: Solve for x
    x = 179,341,319.36/14,240.80
  6. Step 6: Final answer
    x = 12,593.49

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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.