Home / 20,772.63-28,666.53-11,340.99

Finding the Fourth Proportional to 20,772.63, 28,666.53 and 11,340.99

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Solution

The fourth proportional to 20,772.63, 28,666.53 and 11,340.99 is: 15,650.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.63 : 28,666.53 = 11,340.99 : x
  2. Step 2: Convert to fraction form
    20,772.63/28,666.53 = 11,340.99/x
  3. Step 3: Cross multiply
    20,772.63x = 28,666.53 × 11,340.99
  4. Step 4: Simplify right side
    20,772.63x = 325,106,830.06
  5. Step 5: Solve for x
    x = 325,106,830.06/20,772.63
  6. Step 6: Final answer
    x = 15,650.73

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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.