Home / 20,558.04-28,370.16-11,126.64

Finding the Fourth Proportional to 20,558.04, 28,370.16 and 11,126.64

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Solution

The fourth proportional to 20,558.04, 28,370.16 and 11,126.64 is: 15,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.04 : 28,370.16 = 11,126.64 : x
  2. Step 2: Convert to fraction form
    20,558.04/28,370.16 = 11,126.64/x
  3. Step 3: Cross multiply
    20,558.04x = 28,370.16 × 11,126.64
  4. Step 4: Simplify right side
    20,558.04x = 315,664,557.06
  5. Step 5: Solve for x
    x = 315,664,557.06/20,558.04
  6. Step 6: Final answer
    x = 15,354.80

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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.