Home / 42,632.03-63,928.60-20,455.85

Finding the Fourth Proportional to 42,632.03, 63,928.60 and 20,455.85

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Solution

The fourth proportional to 42,632.03, 63,928.60 and 20,455.85 is: 30,674.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,632.03 : 63,928.60 = 20,455.85 : x
  2. Step 2: Convert to fraction form
    42,632.03/63,928.60 = 20,455.85/x
  3. Step 3: Cross multiply
    42,632.03x = 63,928.60 × 20,455.85
  4. Step 4: Simplify right side
    42,632.03x = 1,307,713,532.67
  5. Step 5: Solve for x
    x = 1,307,713,532.67/42,632.03
  6. Step 6: Final answer
    x = 30,674.44

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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.