Home / 20,459.04-30,688.56-6,420.29

Finding the Fourth Proportional to 20,459.04, 30,688.56 and 6,420.29

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Solution

The fourth proportional to 20,459.04, 30,688.56 and 6,420.29 is: 9,630.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.04 : 30,688.56 = 6,420.29 : x
  2. Step 2: Convert to fraction form
    20,459.04/30,688.56 = 6,420.29/x
  3. Step 3: Cross multiply
    20,459.04x = 30,688.56 × 6,420.29
  4. Step 4: Simplify right side
    20,459.04x = 197,029,301.44
  5. Step 5: Solve for x
    x = 197,029,301.44/20,459.04
  6. Step 6: Final answer
    x = 9,630.43

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Similar ratio
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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.