Home / 14,285.35-21,420.81-8,364.03

Finding the Fourth Proportional to 14,285.35, 21,420.81 and 8,364.03

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Solution

The fourth proportional to 14,285.35, 21,420.81 and 8,364.03 is: 12,541.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,285.35 : 21,420.81 = 8,364.03 : x
  2. Step 2: Convert to fraction form
    14,285.35/21,420.81 = 8,364.03/x
  3. Step 3: Cross multiply
    14,285.35x = 21,420.81 × 8,364.03
  4. Step 4: Simplify right side
    14,285.35x = 179,164,240.66
  5. Step 5: Solve for x
    x = 179,164,240.66/14,285.35
  6. Step 6: Final answer
    x = 12,541.81

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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.