Home / 20,875.02-28,808.26-11,922.39

Finding the Fourth Proportional to 20,875.02, 28,808.26 and 11,922.39

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Solution

The fourth proportional to 20,875.02, 28,808.26 and 11,922.39 is: 16,453.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.02 : 28,808.26 = 11,922.39 : x
  2. Step 2: Convert to fraction form
    20,875.02/28,808.26 = 11,922.39/x
  3. Step 3: Cross multiply
    20,875.02x = 28,808.26 × 11,922.39
  4. Step 4: Simplify right side
    20,875.02x = 343,463,281.14
  5. Step 5: Solve for x
    x = 343,463,281.14/20,875.02
  6. Step 6: Final answer
    x = 16,453.32

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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.