Home / 20,557.94-28,383.36-12,604.55

Finding the Fourth Proportional to 20,557.94, 28,383.36 and 12,604.55

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Solution

The fourth proportional to 20,557.94, 28,383.36 and 12,604.55 is: 17,402.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.94 : 28,383.36 = 12,604.55 : x
  2. Step 2: Convert to fraction form
    20,557.94/28,383.36 = 12,604.55/x
  3. Step 3: Cross multiply
    20,557.94x = 28,383.36 × 12,604.55
  4. Step 4: Simplify right side
    20,557.94x = 357,759,480.29
  5. Step 5: Solve for x
    x = 357,759,480.29/20,557.94
  6. Step 6: Final answer
    x = 17,402.50

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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.