Home / 15,069.40-20,775.36-12,707.44

Finding the Fourth Proportional to 15,069.40, 20,775.36 and 12,707.44

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Solution

The fourth proportional to 15,069.40, 20,775.36 and 12,707.44 is: 17,519.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,069.40 : 20,775.36 = 12,707.44 : x
  2. Step 2: Convert to fraction form
    15,069.40/20,775.36 = 12,707.44/x
  3. Step 3: Cross multiply
    15,069.40x = 20,775.36 × 12,707.44
  4. Step 4: Simplify right side
    15,069.40x = 264,001,640.68
  5. Step 5: Solve for x
    x = 264,001,640.68/15,069.40
  6. Step 6: Final answer
    x = 17,519.05

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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.