Home / 20,537.96-28,342.36-11,106.50

Finding the Fourth Proportional to 20,537.96, 28,342.36 and 11,106.50

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Solution

The fourth proportional to 20,537.96, 28,342.36 and 11,106.50 is: 15,326.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,537.96 : 28,342.36 = 11,106.50 : x
  2. Step 2: Convert to fraction form
    20,537.96/28,342.36 = 11,106.50/x
  3. Step 3: Cross multiply
    20,537.96x = 28,342.36 × 11,106.50
  4. Step 4: Simplify right side
    20,537.96x = 314,784,421.34
  5. Step 5: Solve for x
    x = 314,784,421.34/20,537.96
  6. Step 6: Final answer
    x = 15,326.96

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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.