Home / 28,379.80-42,495.28-20,014.48

Finding the Fourth Proportional to 28,379.80, 42,495.28 and 20,014.48

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Solution

The fourth proportional to 28,379.80, 42,495.28 and 20,014.48 is: 29,969.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.80 : 42,495.28 = 20,014.48 : x
  2. Step 2: Convert to fraction form
    28,379.80/42,495.28 = 20,014.48/x
  3. Step 3: Cross multiply
    28,379.80x = 42,495.28 × 20,014.48
  4. Step 4: Simplify right side
    28,379.80x = 850,520,931.65
  5. Step 5: Solve for x
    x = 850,520,931.65/28,379.80
  6. Step 6: Final answer
    x = 29,969.24

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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.