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Finding the Fourth Proportional to 35,808.60, 53,712.90 and 20,256.60

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Solution

The fourth proportional to 35,808.60, 53,712.90 and 20,256.60 is: 30,384.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,808.60 : 53,712.90 = 20,256.60 : x
  2. Step 2: Convert to fraction form
    35,808.60/53,712.90 = 20,256.60/x
  3. Step 3: Cross multiply
    35,808.60x = 53,712.90 × 20,256.60
  4. Step 4: Simplify right side
    35,808.60x = 1,088,040,730.14
  5. Step 5: Solve for x
    x = 1,088,040,730.14/35,808.60
  6. Step 6: Final answer
    x = 30,384.90

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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.