Home / 13,085.08-18,057.32-7,116.80

Finding the Fourth Proportional to 13,085.08, 18,057.32 and 7,116.80

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Solution

The fourth proportional to 13,085.08, 18,057.32 and 7,116.80 is: 9,821.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,085.08 : 18,057.32 = 7,116.80 : x
  2. Step 2: Convert to fraction form
    13,085.08/18,057.32 = 7,116.80/x
  3. Step 3: Cross multiply
    13,085.08x = 18,057.32 × 7,116.80
  4. Step 4: Simplify right side
    13,085.08x = 128,510,334.98
  5. Step 5: Solve for x
    x = 128,510,334.98/13,085.08
  6. Step 6: Final answer
    x = 9,821.13

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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.