Home / 20,459.21-30,688.82-5,667.80

Finding the Fourth Proportional to 20,459.21, 30,688.82 and 5,667.80

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Solution

The fourth proportional to 20,459.21, 30,688.82 and 5,667.80 is: 8,501.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.21 : 30,688.82 = 5,667.80 : x
  2. Step 2: Convert to fraction form
    20,459.21/30,688.82 = 5,667.80/x
  3. Step 3: Cross multiply
    20,459.21x = 30,688.82 × 5,667.80
  4. Step 4: Simplify right side
    20,459.21x = 173,938,094.00
  5. Step 5: Solve for x
    x = 173,938,094.00/20,459.21
  6. Step 6: Final answer
    x = 8,501.70

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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.