Home / 20,679.02-28,537.35-12,716.54

Finding the Fourth Proportional to 20,679.02, 28,537.35 and 12,716.54

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Solution

The fourth proportional to 20,679.02, 28,537.35 and 12,716.54 is: 17,549.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.02 : 28,537.35 = 12,716.54 : x
  2. Step 2: Convert to fraction form
    20,679.02/28,537.35 = 12,716.54/x
  3. Step 3: Cross multiply
    20,679.02x = 28,537.35 × 12,716.54
  4. Step 4: Simplify right side
    20,679.02x = 362,896,352.77
  5. Step 5: Solve for x
    x = 362,896,352.77/20,679.02
  6. Step 6: Final answer
    x = 17,549.01

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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.