Home / 14,120.70-21,205.35-13,683.30

Finding the Fourth Proportional to 14,120.70, 21,205.35 and 13,683.30

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Solution

The fourth proportional to 14,120.70, 21,205.35 and 13,683.30 is: 20,548.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,120.70 : 21,205.35 = 13,683.30 : x
  2. Step 2: Convert to fraction form
    14,120.70/21,205.35 = 13,683.30/x
  3. Step 3: Cross multiply
    14,120.70x = 21,205.35 × 13,683.30
  4. Step 4: Simplify right side
    14,120.70x = 290,159,165.66
  5. Step 5: Solve for x
    x = 290,159,165.66/14,120.70
  6. Step 6: Final answer
    x = 20,548.50

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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.