Home / 36,459.12-54,711.72-20,907.12

Finding the Fourth Proportional to 36,459.12, 54,711.72 and 20,907.12

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Solution

The fourth proportional to 36,459.12, 54,711.72 and 20,907.12 is: 31,373.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,459.12 : 54,711.72 = 20,907.12 : x
  2. Step 2: Convert to fraction form
    36,459.12/54,711.72 = 20,907.12/x
  3. Step 3: Cross multiply
    36,459.12x = 54,711.72 × 20,907.12
  4. Step 4: Simplify right side
    36,459.12x = 1,143,864,495.45
  5. Step 5: Solve for x
    x = 1,143,864,495.45/36,459.12
  6. Step 6: Final answer
    x = 31,373.89

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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.