Home / 28,000.79-41,986.60-13,205.74

Finding the Fourth Proportional to 28,000.79, 41,986.60 and 13,205.74

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Solution

The fourth proportional to 28,000.79, 41,986.60 and 13,205.74 is: 19,801.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.79 : 41,986.60 = 13,205.74 : x
  2. Step 2: Convert to fraction form
    28,000.79/41,986.60 = 13,205.74/x
  3. Step 3: Cross multiply
    28,000.79x = 41,986.60 × 13,205.74
  4. Step 4: Simplify right side
    28,000.79x = 554,463,913.15
  5. Step 5: Solve for x
    x = 554,463,913.15/28,000.79
  6. Step 6: Final answer
    x = 19,801.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.