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Finding the Fourth Proportional to 14,290.56, 19,720.88 and 8,003.04

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Solution

The fourth proportional to 14,290.56, 19,720.88 and 8,003.04 is: 11,044.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.56 : 19,720.88 = 8,003.04 : x
  2. Step 2: Convert to fraction form
    14,290.56/19,720.88 = 8,003.04/x
  3. Step 3: Cross multiply
    14,290.56x = 19,720.88 × 8,003.04
  4. Step 4: Simplify right side
    14,290.56x = 157,826,991.48
  5. Step 5: Solve for x
    x = 157,826,991.48/14,290.56
  6. Step 6: Final answer
    x = 11,044.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.