Home / 20,463.48-28,239.35-11,511.05

Finding the Fourth Proportional to 20,463.48, 28,239.35 and 11,511.05

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Solution

The fourth proportional to 20,463.48, 28,239.35 and 11,511.05 is: 15,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,463.48 : 28,239.35 = 11,511.05 : x
  2. Step 2: Convert to fraction form
    20,463.48/28,239.35 = 11,511.05/x
  3. Step 3: Cross multiply
    20,463.48x = 28,239.35 × 11,511.05
  4. Step 4: Simplify right side
    20,463.48x = 325,064,371.07
  5. Step 5: Solve for x
    x = 325,064,371.07/20,463.48
  6. Step 6: Final answer
    x = 15,885.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.