Home / 28,636.68-39,518.10-15,889.44

Finding the Fourth Proportional to 28,636.68, 39,518.10 and 15,889.44

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Solution

The fourth proportional to 28,636.68, 39,518.10 and 15,889.44 is: 21,927.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,636.68 : 39,518.10 = 15,889.44 : x
  2. Step 2: Convert to fraction form
    28,636.68/39,518.10 = 15,889.44/x
  3. Step 3: Cross multiply
    28,636.68x = 39,518.10 × 15,889.44
  4. Step 4: Simplify right side
    28,636.68x = 627,920,478.86
  5. Step 5: Solve for x
    x = 627,920,478.86/28,636.68
  6. Step 6: Final answer
    x = 21,927.14

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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.