Home / 20,442.30-28,328.76-20,048.64

Finding the Fourth Proportional to 20,442.30, 28,328.76 and 20,048.64

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Solution

The fourth proportional to 20,442.30, 28,328.76 and 20,048.64 is: 27,783.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.30 : 28,328.76 = 20,048.64 : x
  2. Step 2: Convert to fraction form
    20,442.30/28,328.76 = 20,048.64/x
  3. Step 3: Cross multiply
    20,442.30x = 28,328.76 × 20,048.64
  4. Step 4: Simplify right side
    20,442.30x = 567,953,110.89
  5. Step 5: Solve for x
    x = 567,953,110.89/20,442.30
  6. Step 6: Final answer
    x = 27,783.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.