Home / 15,062.35-20,783.69-8,689.18

Finding the Fourth Proportional to 15,062.35, 20,783.69 and 8,689.18

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Solution

The fourth proportional to 15,062.35, 20,783.69 and 8,689.18 is: 11,989.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,062.35 : 20,783.69 = 8,689.18 : x
  2. Step 2: Convert to fraction form
    15,062.35/20,783.69 = 8,689.18/x
  3. Step 3: Cross multiply
    15,062.35x = 20,783.69 × 8,689.18
  4. Step 4: Simplify right side
    15,062.35x = 180,593,128.07
  5. Step 5: Solve for x
    x = 180,593,128.07/15,062.35
  6. Step 6: Final answer
    x = 11,989.71

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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.