Home / 20,596.48-28,421.04-12,639.04

Finding the Fourth Proportional to 20,596.48, 28,421.04 and 12,639.04

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Solution

The fourth proportional to 20,596.48, 28,421.04 and 12,639.04 is: 17,440.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,596.48 : 28,421.04 = 12,639.04 : x
  2. Step 2: Convert to fraction form
    20,596.48/28,421.04 = 12,639.04/x
  3. Step 3: Cross multiply
    20,596.48x = 28,421.04 × 12,639.04
  4. Step 4: Simplify right side
    20,596.48x = 359,214,661.40
  5. Step 5: Solve for x
    x = 359,214,661.40/20,596.48
  6. Step 6: Final answer
    x = 17,440.59

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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.