Home / 28,140.34-42,215.94-8,417.26

Finding the Fourth Proportional to 28,140.34, 42,215.94 and 8,417.26

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Solution

The fourth proportional to 28,140.34, 42,215.94 and 8,417.26 is: 12,627.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.34 : 42,215.94 = 8,417.26 : x
  2. Step 2: Convert to fraction form
    28,140.34/42,215.94 = 8,417.26/x
  3. Step 3: Cross multiply
    28,140.34x = 42,215.94 × 8,417.26
  4. Step 4: Simplify right side
    28,140.34x = 355,342,543.12
  5. Step 5: Solve for x
    x = 355,342,543.12/28,140.34
  6. Step 6: Final answer
    x = 12,627.51

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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.