Home / 20,075.16-30,090.06-15,129.30

Finding the Fourth Proportional to 20,075.16, 30,090.06 and 15,129.30

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Solution

The fourth proportional to 20,075.16, 30,090.06 and 15,129.30 is: 22,676.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.16 : 30,090.06 = 15,129.30 : x
  2. Step 2: Convert to fraction form
    20,075.16/30,090.06 = 15,129.30/x
  3. Step 3: Cross multiply
    20,075.16x = 30,090.06 × 15,129.30
  4. Step 4: Simplify right side
    20,075.16x = 455,241,544.76
  5. Step 5: Solve for x
    x = 455,241,544.76/20,075.16
  6. Step 6: Final answer
    x = 22,676.86

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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.