Home / 20,500.70-30,742.34-6,457.32

Finding the Fourth Proportional to 20,500.70, 30,742.34 and 6,457.32

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Solution

The fourth proportional to 20,500.70, 30,742.34 and 6,457.32 is: 9,683.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.70 : 30,742.34 = 6,457.32 : x
  2. Step 2: Convert to fraction form
    20,500.70/30,742.34 = 6,457.32/x
  3. Step 3: Cross multiply
    20,500.70x = 30,742.34 × 6,457.32
  4. Step 4: Simplify right side
    20,500.70x = 198,513,094.64
  5. Step 5: Solve for x
    x = 198,513,094.64/20,500.70
  6. Step 6: Final answer
    x = 9,683.24

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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.