Home / 20,583.86-28,405.74-11,152.46

Finding the Fourth Proportional to 20,583.86, 28,405.74 and 11,152.46

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Solution

The fourth proportional to 20,583.86, 28,405.74 and 11,152.46 is: 15,390.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.86 : 28,405.74 = 11,152.46 : x
  2. Step 2: Convert to fraction form
    20,583.86/28,405.74 = 11,152.46/x
  3. Step 3: Cross multiply
    20,583.86x = 28,405.74 × 11,152.46
  4. Step 4: Simplify right side
    20,583.86x = 316,793,879.12
  5. Step 5: Solve for x
    x = 316,793,879.12/20,583.86
  6. Step 6: Final answer
    x = 15,390.40

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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.