Home / 13,206.28-18,225.30-7,619.08

Finding the Fourth Proportional to 13,206.28, 18,225.30 and 7,619.08

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Solution

The fourth proportional to 13,206.28, 18,225.30 and 7,619.08 is: 10,514.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206.28 : 18,225.30 = 7,619.08 : x
  2. Step 2: Convert to fraction form
    13,206.28/18,225.30 = 7,619.08/x
  3. Step 3: Cross multiply
    13,206.28x = 18,225.30 × 7,619.08
  4. Step 4: Simplify right side
    13,206.28x = 138,860,018.72
  5. Step 5: Solve for x
    x = 138,860,018.72/13,206.28
  6. Step 6: Final answer
    x = 10,514.70

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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.