Home / 20,437.32-28,204.62-12,477.24

Finding the Fourth Proportional to 20,437.32, 28,204.62 and 12,477.24

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Solution

The fourth proportional to 20,437.32, 28,204.62 and 12,477.24 is: 17,219.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.32 : 28,204.62 = 12,477.24 : x
  2. Step 2: Convert to fraction form
    20,437.32/28,204.62 = 12,477.24/x
  3. Step 3: Cross multiply
    20,437.32x = 28,204.62 × 12,477.24
  4. Step 4: Simplify right side
    20,437.32x = 351,915,812.85
  5. Step 5: Solve for x
    x = 351,915,812.85/20,437.32
  6. Step 6: Final answer
    x = 17,219.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.