Home / 20,805.04-28,707.63-11,852.71

Finding the Fourth Proportional to 20,805.04, 28,707.63 and 11,852.71

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Solution

The fourth proportional to 20,805.04, 28,707.63 and 11,852.71 is: 16,354.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,805.04 : 28,707.63 = 11,852.71 : x
  2. Step 2: Convert to fraction form
    20,805.04/28,707.63 = 11,852.71/x
  3. Step 3: Cross multiply
    20,805.04x = 28,707.63 × 11,852.71
  4. Step 4: Simplify right side
    20,805.04x = 340,263,213.18
  5. Step 5: Solve for x
    x = 340,263,213.18/20,805.04
  6. Step 6: Final answer
    x = 16,354.85

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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.