Home / 20,400.90-30,598.92-5,611.32

Finding the Fourth Proportional to 20,400.90, 30,598.92 and 5,611.32

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Solution

The fourth proportional to 20,400.90, 30,598.92 and 5,611.32 is: 8,416.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.90 : 30,598.92 = 5,611.32 : x
  2. Step 2: Convert to fraction form
    20,400.90/30,598.92 = 5,611.32/x
  3. Step 3: Cross multiply
    20,400.90x = 30,598.92 × 5,611.32
  4. Step 4: Simplify right side
    20,400.90x = 171,700,331.77
  5. Step 5: Solve for x
    x = 171,700,331.77/20,400.90
  6. Step 6: Final answer
    x = 8,416.31

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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.