Home / 20,669.60-28,528.16-12,284.48

Finding the Fourth Proportional to 20,669.60, 28,528.16 and 12,284.48

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Solution

The fourth proportional to 20,669.60, 28,528.16 and 12,284.48 is: 16,955.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.60 : 28,528.16 = 12,284.48 : x
  2. Step 2: Convert to fraction form
    20,669.60/28,528.16 = 12,284.48/x
  3. Step 3: Cross multiply
    20,669.60x = 28,528.16 × 12,284.48
  4. Step 4: Simplify right side
    20,669.60x = 350,453,610.96
  5. Step 5: Solve for x
    x = 350,453,610.96/20,669.60
  6. Step 6: Final answer
    x = 16,955.03

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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.