Home / 30,075.18-45,119.25-12,546.78

Finding the Fourth Proportional to 30,075.18, 45,119.25 and 12,546.78

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Solution

The fourth proportional to 30,075.18, 45,119.25 and 12,546.78 is: 18,822.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,075.18 : 45,119.25 = 12,546.78 : x
  2. Step 2: Convert to fraction form
    30,075.18/45,119.25 = 12,546.78/x
  3. Step 3: Cross multiply
    30,075.18x = 45,119.25 × 12,546.78
  4. Step 4: Simplify right side
    30,075.18x = 566,101,303.52
  5. Step 5: Solve for x
    x = 566,101,303.52/30,075.18
  6. Step 6: Final answer
    x = 18,822.87

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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.