Home / 30,114.87-45,176.76-28,269.69

Finding the Fourth Proportional to 30,114.87, 45,176.76 and 28,269.69

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Solution

The fourth proportional to 30,114.87, 45,176.76 and 28,269.69 is: 42,408.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,114.87 : 45,176.76 = 28,269.69 : x
  2. Step 2: Convert to fraction form
    30,114.87/45,176.76 = 28,269.69/x
  3. Step 3: Cross multiply
    30,114.87x = 45,176.76 × 28,269.69
  4. Step 4: Simplify right side
    30,114.87x = 1,277,133,000.40
  5. Step 5: Solve for x
    x = 1,277,133,000.40/30,114.87
  6. Step 6: Final answer
    x = 42,408.72

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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.