Home / 19,157.45-28,725.34-7,457.21

Finding the Fourth Proportional to 19,157.45, 28,725.34 and 7,457.21

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Solution

The fourth proportional to 19,157.45, 28,725.34 and 7,457.21 is: 11,181.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157.45 : 28,725.34 = 7,457.21 : x
  2. Step 2: Convert to fraction form
    19,157.45/28,725.34 = 7,457.21/x
  3. Step 3: Cross multiply
    19,157.45x = 28,725.34 × 7,457.21
  4. Step 4: Simplify right side
    19,157.45x = 214,210,855.42
  5. Step 5: Solve for x
    x = 214,210,855.42/19,157.45
  6. Step 6: Final answer
    x = 11,181.60

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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.