Home / 13,085.30-18,057.94-7,117.07

Finding the Fourth Proportional to 13,085.30, 18,057.94 and 7,117.07

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Solution

The fourth proportional to 13,085.30, 18,057.94 and 7,117.07 is: 9,821.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,085.30 : 18,057.94 = 7,117.07 : x
  2. Step 2: Convert to fraction form
    13,085.30/18,057.94 = 7,117.07/x
  3. Step 3: Cross multiply
    13,085.30x = 18,057.94 × 7,117.07
  4. Step 4: Simplify right side
    13,085.30x = 128,519,514.95
  5. Step 5: Solve for x
    x = 128,519,514.95/13,085.30
  6. Step 6: Final answer
    x = 9,821.67

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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.