Home / 20,415.93-28,176.48-12,862.14

Finding the Fourth Proportional to 20,415.93, 28,176.48 and 12,862.14

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Solution

The fourth proportional to 20,415.93, 28,176.48 and 12,862.14 is: 17,751.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415.93 : 28,176.48 = 12,862.14 : x
  2. Step 2: Convert to fraction form
    20,415.93/28,176.48 = 12,862.14/x
  3. Step 3: Cross multiply
    20,415.93x = 28,176.48 × 12,862.14
  4. Step 4: Simplify right side
    20,415.93x = 362,409,625.27
  5. Step 5: Solve for x
    x = 362,409,625.27/20,415.93
  6. Step 6: Final answer
    x = 17,751.32

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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.