Home / 20,535.04-28,342.77-12,976.57

Finding the Fourth Proportional to 20,535.04, 28,342.77 and 12,976.57

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Solution

The fourth proportional to 20,535.04, 28,342.77 and 12,976.57 is: 17,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.04 : 28,342.77 = 12,976.57 : x
  2. Step 2: Convert to fraction form
    20,535.04/28,342.77 = 12,976.57/x
  3. Step 3: Cross multiply
    20,535.04x = 28,342.77 × 12,976.57
  4. Step 4: Simplify right side
    20,535.04x = 367,791,797.19
  5. Step 5: Solve for x
    x = 367,791,797.19/20,535.04
  6. Step 6: Final answer
    x = 17,910.45

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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.