Home / 20,602.48-28,429.32-12,645.04

Finding the Fourth Proportional to 20,602.48, 28,429.32 and 12,645.04

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Solution

The fourth proportional to 20,602.48, 28,429.32 and 12,645.04 is: 17,448.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.48 : 28,429.32 = 12,645.04 : x
  2. Step 2: Convert to fraction form
    20,602.48/28,429.32 = 12,645.04/x
  3. Step 3: Cross multiply
    20,602.48x = 28,429.32 × 12,645.04
  4. Step 4: Simplify right side
    20,602.48x = 359,489,888.57
  5. Step 5: Solve for x
    x = 359,489,888.57/20,602.48
  6. Step 6: Final answer
    x = 17,448.86

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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.