Home / 28,567.58-39,423.20-15,821.42

Finding the Fourth Proportional to 28,567.58, 39,423.20 and 15,821.42

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Solution

The fourth proportional to 28,567.58, 39,423.20 and 15,821.42 is: 21,833.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,567.58 : 39,423.20 = 15,821.42 : x
  2. Step 2: Convert to fraction form
    28,567.58/39,423.20 = 15,821.42/x
  3. Step 3: Cross multiply
    28,567.58x = 39,423.20 × 15,821.42
  4. Step 4: Simplify right side
    28,567.58x = 623,731,004.94
  5. Step 5: Solve for x
    x = 623,731,004.94/28,567.58
  6. Step 6: Final answer
    x = 21,833.53

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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.