Home / 13,646.40-20,433.14-8,689.20

Finding the Fourth Proportional to 13,646.40, 20,433.14 and 8,689.20

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Solution

The fourth proportional to 13,646.40, 20,433.14 and 8,689.20 is: 13,010.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,646.40 : 20,433.14 = 8,689.20 : x
  2. Step 2: Convert to fraction form
    13,646.40/20,433.14 = 8,689.20/x
  3. Step 3: Cross multiply
    13,646.40x = 20,433.14 × 8,689.20
  4. Step 4: Simplify right side
    13,646.40x = 177,547,640.09
  5. Step 5: Solve for x
    x = 177,547,640.09/13,646.40
  6. Step 6: Final answer
    x = 13,010.58

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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.