Home / 14,072.80-21,113.43-4,212.40

Finding the Fourth Proportional to 14,072.80, 21,113.43 and 4,212.40

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Solution

The fourth proportional to 14,072.80, 21,113.43 and 4,212.40 is: 6,319.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,072.80 : 21,113.43 = 4,212.40 : x
  2. Step 2: Convert to fraction form
    14,072.80/21,113.43 = 4,212.40/x
  3. Step 3: Cross multiply
    14,072.80x = 21,113.43 × 4,212.40
  4. Step 4: Simplify right side
    14,072.80x = 88,938,212.53
  5. Step 5: Solve for x
    x = 88,938,212.53/14,072.80
  6. Step 6: Final answer
    x = 6,319.87

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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.