Home / 35,500.77-48,989.40-20,382.81

Finding the Fourth Proportional to 35,500.77, 48,989.40 and 20,382.81

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Solution

The fourth proportional to 35,500.77, 48,989.40 and 20,382.81 is: 28,127.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,500.77 : 48,989.40 = 20,382.81 : x
  2. Step 2: Convert to fraction form
    35,500.77/48,989.40 = 20,382.81/x
  3. Step 3: Cross multiply
    35,500.77x = 48,989.40 × 20,382.81
  4. Step 4: Simplify right side
    35,500.77x = 998,541,632.21
  5. Step 5: Solve for x
    x = 998,541,632.21/35,500.77
  6. Step 6: Final answer
    x = 28,127.32

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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.