Home / 12,526.79-17,287.23-6,861.78

Finding the Fourth Proportional to 12,526.79, 17,287.23 and 6,861.78

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Solution

The fourth proportional to 12,526.79, 17,287.23 and 6,861.78 is: 9,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,526.79 : 17,287.23 = 6,861.78 : x
  2. Step 2: Convert to fraction form
    12,526.79/17,287.23 = 6,861.78/x
  3. Step 3: Cross multiply
    12,526.79x = 17,287.23 × 6,861.78
  4. Step 4: Simplify right side
    12,526.79x = 118,621,169.07
  5. Step 5: Solve for x
    x = 118,621,169.07/12,526.79
  6. Step 6: Final answer
    x = 9,469.40

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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.