Home / 28,130.36-42,195.53-11,487.49

Finding the Fourth Proportional to 28,130.36, 42,195.53 and 11,487.49

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Solution

The fourth proportional to 28,130.36, 42,195.53 and 11,487.49 is: 17,231.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.36 : 42,195.53 = 11,487.49 : x
  2. Step 2: Convert to fraction form
    28,130.36/42,195.53 = 11,487.49/x
  3. Step 3: Cross multiply
    28,130.36x = 42,195.53 × 11,487.49
  4. Step 4: Simplify right side
    28,130.36x = 484,720,652.15
  5. Step 5: Solve for x
    x = 484,720,652.15/28,130.36
  6. Step 6: Final answer
    x = 17,231.23

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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.