Home / 28,386.22-39,172.99-16,456.47

Finding the Fourth Proportional to 28,386.22, 39,172.99 and 16,456.47

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Solution

The fourth proportional to 28,386.22, 39,172.99 and 16,456.47 is: 22,709.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386.22 : 39,172.99 = 16,456.47 : x
  2. Step 2: Convert to fraction form
    28,386.22/39,172.99 = 16,456.47/x
  3. Step 3: Cross multiply
    28,386.22x = 39,172.99 × 16,456.47
  4. Step 4: Simplify right side
    28,386.22x = 644,649,134.75
  5. Step 5: Solve for x
    x = 644,649,134.75/28,386.22
  6. Step 6: Final answer
    x = 22,709.94

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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.