Home / 15,485.49-21,370.26-8,771.10

Finding the Fourth Proportional to 15,485.49, 21,370.26 and 8,771.10

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Solution

The fourth proportional to 15,485.49, 21,370.26 and 8,771.10 is: 12,104.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.49 : 21,370.26 = 8,771.10 : x
  2. Step 2: Convert to fraction form
    15,485.49/21,370.26 = 8,771.10/x
  3. Step 3: Cross multiply
    15,485.49x = 21,370.26 × 8,771.10
  4. Step 4: Simplify right side
    15,485.49x = 187,440,640.24
  5. Step 5: Solve for x
    x = 187,440,640.24/15,485.49
  6. Step 6: Final answer
    x = 12,104.28

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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.