Home / 13,389.13-18,477.00-8,085.25

Finding the Fourth Proportional to 13,389.13, 18,477.00 and 8,085.25

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Solution

The fourth proportional to 13,389.13, 18,477.00 and 8,085.25 is: 11,157.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.13 : 18,477.00 = 8,085.25 : x
  2. Step 2: Convert to fraction form
    13,389.13/18,477.00 = 8,085.25/x
  3. Step 3: Cross multiply
    13,389.13x = 18,477.00 × 8,085.25
  4. Step 4: Simplify right side
    13,389.13x = 149,391,031.44
  5. Step 5: Solve for x
    x = 149,391,031.44/13,389.13
  6. Step 6: Final answer
    x = 11,157.64

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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.