Home / 28,210.90-42,316.26-8,489.43

Finding the Fourth Proportional to 28,210.90, 42,316.26 and 8,489.43

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Solution

The fourth proportional to 28,210.90, 42,316.26 and 8,489.43 is: 12,734.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,210.90 : 42,316.26 = 8,489.43 : x
  2. Step 2: Convert to fraction form
    28,210.90/42,316.26 = 8,489.43/x
  3. Step 3: Cross multiply
    28,210.90x = 42,316.26 × 8,489.43
  4. Step 4: Simplify right side
    28,210.90x = 359,240,927.13
  5. Step 5: Solve for x
    x = 359,240,927.13/28,210.90
  6. Step 6: Final answer
    x = 12,734.12

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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.