Home / 30,135.92-45,172.48-10,130.56

Finding the Fourth Proportional to 30,135.92, 45,172.48 and 10,130.56

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Solution

The fourth proportional to 30,135.92, 45,172.48 and 10,130.56 is: 15,185.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,135.92 : 45,172.48 = 10,130.56 : x
  2. Step 2: Convert to fraction form
    30,135.92/45,172.48 = 10,130.56/x
  3. Step 3: Cross multiply
    30,135.92x = 45,172.48 × 10,130.56
  4. Step 4: Simplify right side
    30,135.92x = 457,622,518.99
  5. Step 5: Solve for x
    x = 457,622,518.99/30,135.92
  6. Step 6: Final answer
    x = 15,185.28

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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.