Home / 35,905.76-49,544.64-19,990.40

Finding the Fourth Proportional to 35,905.76, 49,544.64 and 19,990.40

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Solution

The fourth proportional to 35,905.76, 49,544.64 and 19,990.40 is: 27,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,905.76 : 49,544.64 = 19,990.40 : x
  2. Step 2: Convert to fraction form
    35,905.76/49,544.64 = 19,990.40/x
  3. Step 3: Cross multiply
    35,905.76x = 49,544.64 × 19,990.40
  4. Step 4: Simplify right side
    35,905.76x = 990,417,171.46
  5. Step 5: Solve for x
    x = 990,417,171.46/35,905.76
  6. Step 6: Final answer
    x = 27,583.80

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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.