Home / 14,528.40-21,742.20-8,689.20

Finding the Fourth Proportional to 14,528.40, 21,742.20 and 8,689.20

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Solution

The fourth proportional to 14,528.40, 21,742.20 and 8,689.20 is: 13,003.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,528.40 : 21,742.20 = 8,689.20 : x
  2. Step 2: Convert to fraction form
    14,528.40/21,742.20 = 8,689.20/x
  3. Step 3: Cross multiply
    14,528.40x = 21,742.20 × 8,689.20
  4. Step 4: Simplify right side
    14,528.40x = 188,922,324.24
  5. Step 5: Solve for x
    x = 188,922,324.24/14,528.40
  6. Step 6: Final answer
    x = 13,003.66

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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.