Home / 15,817.50-21,826.26-8,742.96

Finding the Fourth Proportional to 15,817.50, 21,826.26 and 8,742.96

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Solution

The fourth proportional to 15,817.50, 21,826.26 and 8,742.96 is: 12,064.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,817.50 : 21,826.26 = 8,742.96 : x
  2. Step 2: Convert to fraction form
    15,817.50/21,826.26 = 8,742.96/x
  3. Step 3: Cross multiply
    15,817.50x = 21,826.26 × 8,742.96
  4. Step 4: Simplify right side
    15,817.50x = 190,826,118.13
  5. Step 5: Solve for x
    x = 190,826,118.13/15,817.50
  6. Step 6: Final answer
    x = 12,064.24

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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.