Home / 20,560.30-28,367.42-12,904.58

Finding the Fourth Proportional to 20,560.30, 28,367.42 and 12,904.58

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Solution

The fourth proportional to 20,560.30, 28,367.42 and 12,904.58 is: 17,804.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.30 : 28,367.42 = 12,904.58 : x
  2. Step 2: Convert to fraction form
    20,560.30/28,367.42 = 12,904.58/x
  3. Step 3: Cross multiply
    20,560.30x = 28,367.42 × 12,904.58
  4. Step 4: Simplify right side
    20,560.30x = 366,069,647.18
  5. Step 5: Solve for x
    x = 366,069,647.18/20,560.30
  6. Step 6: Final answer
    x = 17,804.69

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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.