Home / 20,567.76-28,383.52-11,136.32

Finding the Fourth Proportional to 20,567.76, 28,383.52 and 11,136.32

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Solution

The fourth proportional to 20,567.76, 28,383.52 and 11,136.32 is: 15,368.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,567.76 : 28,383.52 = 11,136.32 : x
  2. Step 2: Convert to fraction form
    20,567.76/28,383.52 = 11,136.32/x
  3. Step 3: Cross multiply
    20,567.76x = 28,383.52 × 11,136.32
  4. Step 4: Simplify right side
    20,567.76x = 316,087,961.45
  5. Step 5: Solve for x
    x = 316,087,961.45/20,567.76
  6. Step 6: Final answer
    x = 15,368.13

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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.