Home / 9,990.60-13,785.49-5,741.81

Finding the Fourth Proportional to 9,990.60, 13,785.49 and 5,741.81

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Solution

The fourth proportional to 9,990.60, 13,785.49 and 5,741.81 is: 7,922.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.60 : 13,785.49 = 5,741.81 : x
  2. Step 2: Convert to fraction form
    9,990.60/13,785.49 = 5,741.81/x
  3. Step 3: Cross multiply
    9,990.60x = 13,785.49 × 5,741.81
  4. Step 4: Simplify right side
    9,990.60x = 79,153,664.34
  5. Step 5: Solve for x
    x = 79,153,664.34/9,990.60
  6. Step 6: Final answer
    x = 7,922.81

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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.