Home / 20,220-30,314.64-10,973.28

Finding the Fourth Proportional to 20,220, 30,314.64 and 10,973.28

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Solution

The fourth proportional to 20,220, 30,314.64 and 10,973.28 is: 16,451.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220 : 30,314.64 = 10,973.28 : x
  2. Step 2: Convert to fraction form
    20,220/30,314.64 = 10,973.28/x
  3. Step 3: Cross multiply
    20,220x = 30,314.64 × 10,973.28
  4. Step 4: Simplify right side
    20,220x = 332,651,032.82
  5. Step 5: Solve for x
    x = 332,651,032.82/20,220
  6. Step 6: Final answer
    x = 16,451.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.