Home / 28,605.75-39,478.10-16,031.31

Finding the Fourth Proportional to 28,605.75, 39,478.10 and 16,031.31

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Solution

The fourth proportional to 28,605.75, 39,478.10 and 16,031.31 is: 22,124.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,605.75 : 39,478.10 = 16,031.31 : x
  2. Step 2: Convert to fraction form
    28,605.75/39,478.10 = 16,031.31/x
  3. Step 3: Cross multiply
    28,605.75x = 39,478.10 × 16,031.31
  4. Step 4: Simplify right side
    28,605.75x = 632,885,579.15
  5. Step 5: Solve for x
    x = 632,885,579.15/28,605.75
  6. Step 6: Final answer
    x = 22,124.42

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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.