Home / 12,543.81-17,310.33-6,878.80

Finding the Fourth Proportional to 12,543.81, 17,310.33 and 6,878.80

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Solution

The fourth proportional to 12,543.81, 17,310.33 and 6,878.80 is: 9,492.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.81 : 17,310.33 = 6,878.80 : x
  2. Step 2: Convert to fraction form
    12,543.81/17,310.33 = 6,878.80/x
  3. Step 3: Cross multiply
    12,543.81x = 17,310.33 × 6,878.80
  4. Step 4: Simplify right side
    12,543.81x = 119,074,290.30
  5. Step 5: Solve for x
    x = 119,074,290.30/12,543.81
  6. Step 6: Final answer
    x = 9,492.67

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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.