Home / 14,200.10-21,300.15-12,669.20

Finding the Fourth Proportional to 14,200.10, 21,300.15 and 12,669.20

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Solution

The fourth proportional to 14,200.10, 21,300.15 and 12,669.20 is: 19,003.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,200.10 : 21,300.15 = 12,669.20 : x
  2. Step 2: Convert to fraction form
    14,200.10/21,300.15 = 12,669.20/x
  3. Step 3: Cross multiply
    14,200.10x = 21,300.15 × 12,669.20
  4. Step 4: Simplify right side
    14,200.10x = 269,855,860.38
  5. Step 5: Solve for x
    x = 269,855,860.38/14,200.10
  6. Step 6: Final answer
    x = 19,003.80

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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.