Home / 35,939.60-53,909.40-20,128.40

Finding the Fourth Proportional to 35,939.60, 53,909.40 and 20,128.40

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Solution

The fourth proportional to 35,939.60, 53,909.40 and 20,128.40 is: 30,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,939.60 : 53,909.40 = 20,128.40 : x
  2. Step 2: Convert to fraction form
    35,939.60/53,909.40 = 20,128.40/x
  3. Step 3: Cross multiply
    35,939.60x = 53,909.40 × 20,128.40
  4. Step 4: Simplify right side
    35,939.60x = 1,085,109,966.96
  5. Step 5: Solve for x
    x = 1,085,109,966.96/35,939.60
  6. Step 6: Final answer
    x = 30,192.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.