Home / 28,563.22-39,415.98-15,816.86

Finding the Fourth Proportional to 28,563.22, 39,415.98 and 15,816.86

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Solution

The fourth proportional to 28,563.22, 39,415.98 and 15,816.86 is: 21,826.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,563.22 : 39,415.98 = 15,816.86 : x
  2. Step 2: Convert to fraction form
    28,563.22/39,415.98 = 15,816.86/x
  3. Step 3: Cross multiply
    28,563.22x = 39,415.98 × 15,816.86
  4. Step 4: Simplify right side
    28,563.22x = 623,437,037.42
  5. Step 5: Solve for x
    x = 623,437,037.42/28,563.22
  6. Step 6: Final answer
    x = 21,826.57

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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.