Home / 13,558.43-18,705.12-8,521.04

Finding the Fourth Proportional to 13,558.43, 18,705.12 and 8,521.04

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Solution

The fourth proportional to 13,558.43, 18,705.12 and 8,521.04 is: 11,755.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.43 : 18,705.12 = 8,521.04 : x
  2. Step 2: Convert to fraction form
    13,558.43/18,705.12 = 8,521.04/x
  3. Step 3: Cross multiply
    13,558.43x = 18,705.12 × 8,521.04
  4. Step 4: Simplify right side
    13,558.43x = 159,387,075.72
  5. Step 5: Solve for x
    x = 159,387,075.72/13,558.43
  6. Step 6: Final answer
    x = 11,755.57

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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.