Home / 35,685.89-53,529.71-11,993.78

Finding the Fourth Proportional to 35,685.89, 53,529.71 and 11,993.78

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Solution

The fourth proportional to 35,685.89, 53,529.71 and 11,993.78 is: 17,990.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,685.89 : 53,529.71 = 11,993.78 : x
  2. Step 2: Convert to fraction form
    35,685.89/53,529.71 = 11,993.78/x
  3. Step 3: Cross multiply
    35,685.89x = 53,529.71 × 11,993.78
  4. Step 4: Simplify right side
    35,685.89x = 642,023,639.06
  5. Step 5: Solve for x
    x = 642,023,639.06/35,685.89
  6. Step 6: Final answer
    x = 17,990.96

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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.