Home / 10,742.69-16,113.39-6,387.86

Finding the Fourth Proportional to 10,742.69, 16,113.39 and 6,387.86

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Solution

The fourth proportional to 10,742.69, 16,113.39 and 6,387.86 is: 9,581.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,742.69 : 16,113.39 = 6,387.86 : x
  2. Step 2: Convert to fraction form
    10,742.69/16,113.39 = 6,387.86/x
  3. Step 3: Cross multiply
    10,742.69x = 16,113.39 × 6,387.86
  4. Step 4: Simplify right side
    10,742.69x = 102,930,047.51
  5. Step 5: Solve for x
    x = 102,930,047.51/10,742.69
  6. Step 6: Final answer
    x = 9,581.40

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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.