Home / 30,155.70-45,237.60-10,440.30

Finding the Fourth Proportional to 30,155.70, 45,237.60 and 10,440.30

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Solution

The fourth proportional to 30,155.70, 45,237.60 and 10,440.30 is: 15,661.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.70 : 45,237.60 = 10,440.30 : x
  2. Step 2: Convert to fraction form
    30,155.70/45,237.60 = 10,440.30/x
  3. Step 3: Cross multiply
    30,155.70x = 45,237.60 × 10,440.30
  4. Step 4: Simplify right side
    30,155.70x = 472,294,115.28
  5. Step 5: Solve for x
    x = 472,294,115.28/30,155.70
  6. Step 6: Final answer
    x = 15,661.85

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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.