Home / 20,450.04-28,239.54-12,909.72

Finding the Fourth Proportional to 20,450.04, 28,239.54 and 12,909.72

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Solution

The fourth proportional to 20,450.04, 28,239.54 and 12,909.72 is: 17,827.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.04 : 28,239.54 = 12,909.72 : x
  2. Step 2: Convert to fraction form
    20,450.04/28,239.54 = 12,909.72/x
  3. Step 3: Cross multiply
    20,450.04x = 28,239.54 × 12,909.72
  4. Step 4: Simplify right side
    20,450.04x = 364,564,554.33
  5. Step 5: Solve for x
    x = 364,564,554.33/20,450.04
  6. Step 6: Final answer
    x = 17,827.08

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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.