Home / 20,709.04-28,578.52-11,277.40

Finding the Fourth Proportional to 20,709.04, 28,578.52 and 11,277.40

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Solution

The fourth proportional to 20,709.04, 28,578.52 and 11,277.40 is: 15,562.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.04 : 28,578.52 = 11,277.40 : x
  2. Step 2: Convert to fraction form
    20,709.04/28,578.52 = 11,277.40/x
  3. Step 3: Cross multiply
    20,709.04x = 28,578.52 × 11,277.40
  4. Step 4: Simplify right side
    20,709.04x = 322,291,401.45
  5. Step 5: Solve for x
    x = 322,291,401.45/20,709.04
  6. Step 6: Final answer
    x = 15,562.84

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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.