Home / 30,639.60-45,936.81-11,661.57

Finding the Fourth Proportional to 30,639.60, 45,936.81 and 11,661.57

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Solution

The fourth proportional to 30,639.60, 45,936.81 and 11,661.57 is: 17,483.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,639.60 : 45,936.81 = 11,661.57 : x
  2. Step 2: Convert to fraction form
    30,639.60/45,936.81 = 11,661.57/x
  3. Step 3: Cross multiply
    30,639.60x = 45,936.81 × 11,661.57
  4. Step 4: Simplify right side
    30,639.60x = 535,695,325.39
  5. Step 5: Solve for x
    x = 535,695,325.39/30,639.60
  6. Step 6: Final answer
    x = 17,483.76

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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.