Home / 20,136.48-30,204.99-6,989.28

Finding the Fourth Proportional to 20,136.48, 30,204.99 and 6,989.28

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Solution

The fourth proportional to 20,136.48, 30,204.99 and 6,989.28 is: 10,484.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.48 : 30,204.99 = 6,989.28 : x
  2. Step 2: Convert to fraction form
    20,136.48/30,204.99 = 6,989.28/x
  3. Step 3: Cross multiply
    20,136.48x = 30,204.99 × 6,989.28
  4. Step 4: Simplify right side
    20,136.48x = 211,111,132.51
  5. Step 5: Solve for x
    x = 211,111,132.51/20,136.48
  6. Step 6: Final answer
    x = 10,484.01

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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.