Home / 14,130.90-21,167.55-8,190.45

Finding the Fourth Proportional to 14,130.90, 21,167.55 and 8,190.45

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Solution

The fourth proportional to 14,130.90, 21,167.55 and 8,190.45 is: 12,268.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,130.90 : 21,167.55 = 8,190.45 : x
  2. Step 2: Convert to fraction form
    14,130.90/21,167.55 = 8,190.45/x
  3. Step 3: Cross multiply
    14,130.90x = 21,167.55 × 8,190.45
  4. Step 4: Simplify right side
    14,130.90x = 173,371,759.90
  5. Step 5: Solve for x
    x = 173,371,759.90/14,130.90
  6. Step 6: Final answer
    x = 12,268.98

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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.