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Finding the Fourth Proportional to 35,807.60, 53,711.40 and 20,255.60

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Solution

The fourth proportional to 35,807.60, 53,711.40 and 20,255.60 is: 30,383.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,807.60 : 53,711.40 = 20,255.60 : x
  2. Step 2: Convert to fraction form
    35,807.60/53,711.40 = 20,255.60/x
  3. Step 3: Cross multiply
    35,807.60x = 53,711.40 × 20,255.60
  4. Step 4: Simplify right side
    35,807.60x = 1,087,956,633.84
  5. Step 5: Solve for x
    x = 1,087,956,633.84/35,807.60
  6. Step 6: Final answer
    x = 30,383.40

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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.