Home / 30,007.89-45,050.72-18,936.81

Finding the Fourth Proportional to 30,007.89, 45,050.72 and 18,936.81

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Solution

The fourth proportional to 30,007.89, 45,050.72 and 18,936.81 is: 28,429.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,007.89 : 45,050.72 = 18,936.81 : x
  2. Step 2: Convert to fraction form
    30,007.89/45,050.72 = 18,936.81/x
  3. Step 3: Cross multiply
    30,007.89x = 45,050.72 × 18,936.81
  4. Step 4: Simplify right side
    30,007.89x = 853,116,830.32
  5. Step 5: Solve for x
    x = 853,116,830.32/30,007.89
  6. Step 6: Final answer
    x = 28,429.75

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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.